Photographing lens assembly, imaging apparatus and electronic device

ABSTRACT

A photographing lens assembly includes seven lens elements, which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The third lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and at least one of an object-side surface and the image-side surface of the seventh lens element includes at least one inflection point. At least one surface of the seven lens elements is aspheric.

RELATED APPLICATIONS

This present application is a continuation of U.S. application Ser. No.16/034,768, filed Jul. 13, 2018, which claims priority to TaiwanApplication Serial Number 106145560, filed Dec. 25, 2017, which isherein incorporated by reference.

BACKGROUND Technical Field

The present disclosure relates to a photographing lens assembly and animaging apparatus. More particularly, the present disclosure relates toa photographing lens assembly and an imaging apparatus with a largefield of view and a short total track length while being applicable toelectronic devices.

Description of Related Art

With the advanced semiconductor manufacturing technologies, theperformances of image sensors are enhanced, and the pixel size isminimized. Therefore, optical lens systems with high image qualitybecome indispensable. Moreover, with the rapid scientific andtechnological progress, the application scope of electronic devicesequipped with optical lens systems becomes wider, and the requirementsfor optical lens systems are more diverse. However, it is hard forbalancing the requirements, such as image quality, sensitivity, aperturesize, volume and field of view, in conventional optical lens systems.Therefore, there is a need for an optical lens system to satisfy thedesired requirements.

SUMMARY

According to one aspect of the present disclosure, a photographing lensassembly includes seven lens elements, which are, in order from anobject side to an image side, a first lens element, a second lenselement, a third lens element, a fourth lens element, a fifth lenselement, a sixth lens element and a seventh lens element. The third lenselement has positive refractive power. The seventh lens element has animage-side surface being concave in a paraxial region thereof, and atleast one of an object-side surface and the image-side surface of theseventh lens element includes at least one inflection point. At leastone surface of the seven lens elements is aspheric. When a focal lengthof the first lens element is f1, a focal length of the third lenselement is f3, a focal length of the fifth lens element is f5, an axialdistance between an object-side surface of the first lens element and animage surface is TL, a maximum image height of the photographing lensassembly is ImgH, a curvature radius of an object-side surface of thethird lens element is R5, and a curvature radius of an image-sidesurface of the third lens element is R6, the following conditions aresatisfied:|f3/f1|<0.90;1.0<TL/ImgH<2.70;0.10<(R5+R6)/(R5−R6)<8.0; and|f5/f1|<0.70.

According to another aspect of the present disclosure, an imagingapparatus includes the photographing lens assembly according to theaforementioned aspect and an image sensor, wherein the image sensor isdisposed on the image surface of the photographing lens assembly.

According to further another aspect of the present disclosure, anelectronic device includes the imaging apparatus according to theaforementioned aspect.

According to yet another aspect of the present disclosure, aphotographing lens assembly includes seven lens elements, which are, inorder from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element, a sixth lens element and a seventh lens element. Thethird lens element has positive refractive power. The seventh lenselement has an image-side surface being concave in a paraxial regionthereof, and at least one of an object-side surface and the image-sidesurface of the seventh lens element includes at least one inflectionpoint. At least one surface of the seven lens elements is aspheric. Whena focal length of the first lens element is f1, a focal length of thethird lens element is f3, an axial distance between an object-sidesurface of the first lens element and an image surface is TL, a maximumimage height of the photographing lens assembly is ImgH, a curvatureradius of the object-side surface of the first lens element is R1, acurvature radius of an image-side surface of the first lens element isR2, a curvature radius of an object-side surface of the third lenselement is R5, and a curvature radius of an image-side surface of thethird lens element is R6, the following conditions are satisfied:|f3/f1|<0.90;1.0<TL/ImgH<2.70;0.10<(R5+R6)/(R5−R6)<8.0; and−1.80<(R1+R2)/(R1−R2).

According to still another aspect of the present disclosure, aphotographing lens assembly includes seven lens elements, which are, inorder from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element, a sixth lens element and a seventh lens element. Thefirst lens element with positive refractive power has an image-sidesurface being convex in a paraxial region thereof. The third lenselement has positive refractive power. The fifth lens element haspositive refractive power. The seventh lens element has an image-sidesurface being concave in a paraxial region thereof and including atleast one convex shape in an off-axis region thereof. At least onesurface of the seven lens elements is aspheric. When a focal length ofthe first lens element is f1, a focal length of the third lens elementis f3, an axial distance between an object-side surface of the firstlens element and an image surface is TL, a maximum image height of thephotographing lens assembly is ImgH, a curvature radius of theobject-side surface of the first lens element is R1, a curvature radiusof the image-side surface of the first lens element is R2, a curvatureradius of an object-side surface of the third lens element is R5, and acurvature radius of an image-side surface of the third lens element isR6, the following conditions are satisfied:|f3/f1|<2.0;1.0<TL/ImgH<2.70;−5.0<(R5+R6)/(R5−R6); and0<(R1+R2)/(R1−R2)<6.0.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure can be more fully understood by reading thefollowing detailed description of the embodiments, with reference madeto the accompanying drawings as follows:

FIG. 1 is a schematic view of an imaging apparatus according to the 1stembodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 1stembodiment;

FIG. 3 is a schematic view of an imaging apparatus according to the 2ndembodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 2ndembodiment;

FIG. 5 is a schematic view of an imaging apparatus according to the 3rdembodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 3rdembodiment;

FIG. 7 is a schematic view of an imaging apparatus according to the 4thembodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 4thembodiment;

FIG. 9 is a schematic view of an imaging apparatus according to the 5thembodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 5thembodiment;

FIG. 11 is a schematic view of an imaging apparatus according to the 6thembodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 6thembodiment;

FIG. 13 is a schematic view of an imaging apparatus according to the 7thembodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 7thembodiment;

FIG. 15 is a schematic view of an imaging apparatus according to the 8thembodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 8thembodiment;

FIG. 17 is a schematic view of an imaging apparatus according to the 9thembodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the imaging apparatus according to the 9thembodiment;

FIG. 19 is a schematic view showing parameters of Y11, Y21, Y31, Y41,Y51 and Y72 of the imaging apparatus according to the 1st embodiment inFIG. 1;

FIG. 20 is a schematic view showing parameters of Dsr3, Dsr4, Dsr5 andDsr6 of the imaging apparatus according to the 1st embodiment in FIG. 1;

FIG. 21 is a schematic view showing parameters of SAGc62 and Yc62 of theimaging apparatus according to the 1st embodiment in FIG. 1;

FIG. 22 is a schematic view showing a parameter of Yc72 of the imagingapparatus according to the 1st embodiment in FIG. 1;

FIG. 23 is a three-dimensional view of an imaging apparatus according tothe 10th embodiment of the present disclosure;

FIG. 24A is a schematic view showing a side of an electronic deviceaccording to the 11th embodiment of the present disclosure;

FIG. 24B is a schematic view showing another side of the electronicdevice in FIG. 24A;

FIG. 24C is a block diagram of the electronic device in FIG. 24A;

FIG. 25 is a schematic view of an electronic device according to the12th embodiment of the present disclosure; and

FIG. 26 is a schematic view of an electronic device according to the13th embodiment of the present disclosure.

DETAILED DESCRIPTION

A photographing lens assembly includes seven lens elements, which are,in order from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element, a sixth lens element and a seventh lens element.

The first lens element can have positive refractive power. Therefore,the light converging ability of the lens elements on the object side ofthe photographing lens assembly can be distributed effectively, andexcessive aberrations caused by overly strong refractive power of anysingle lens element can be avoided. The first lens element can have animage-side surface being convex in a paraxial region thereof, which isfavorable for the symmetry of the photographing lens assembly so as toreduce aberrations. Moreover, at least one of an object-side surface andthe image-side surface of the first lens element can include at leastone inflection point, which is favorable for controlling the size of theimaging apparatus and spherical aberration of the photographing lensassembly.

The second lens element can have an object-side surface being convex ina paraxial region thereof and an image-side surface being concave in aparaxial region thereof. Therefore, tangential and sagittal rays canconverge favorably so as to correct astigmatism of the photographinglens assembly.

The third lens element has positive refractive power. Therefore, themain light converging ability of the photographing lens assembly can beprovided, which is favorable for reducing the total track length thereofso as to achieve compactness.

The fourth lens element can have negative refractive power, which caneffectively correct chromatic aberration of the photographing lensassembly, while avoiding image overlaps due to the shift of the imagingposition of light with different colors.

The fifth lens element can have positive refractive. Therefore, thelight converging ability of the lens elements on the image side of thephotographing lens assembly can be provided so as to balance aberrationsthereof. The fifth lens element can have an object-side surface beingconcave in a paraxial region thereof and can have an image-side surfacebeing convex in a paraxial region thereof. Therefore, it is favorablefor moderating the incident angles and refraction angles of light rayson the surfaces of fifth lens element, so as to prevent the generationof stray lights. At least one of the object-side surface and theimage-side surface of the fifth lens element can include at least oneinflection point. Therefore, the aberration corrections of the fifthlens element can be enhanced so as to improve image brightness and imagequality.

An image-side surface of the sixth lens element can include at least oneconvex shape in an off-axis region thereof. Therefore, it is favorablefor avoiding the total reflection caused by excessive curvature of thesurface of the sixth lens element as well as the resulting light spotsin the image. At least one of an object-side surface and the image-sidesurface of the sixth lens element can include at least one inflectionpoint. Therefore, the refraction angles of light rays on the surface ofsixth lens element can be moderated, and distortion and field curvaturecan be corrected.

The seventh lens element has an image-side surface being concave in aparaxial region thereof, which can effectively control the back focallength to achieve compactness. Moreover, the seventh lens element canhave negative refractive power. Therefore, the refractive power of thelens elements on the image side of the photographing lens assembly canbe balanced for correcting aberrations and avoiding an overly large lensassembly due to an excessive back focal length. Moreover, the image-sidesurface of the seventh lens element can include at least one convexshape in an off-axis region thereof, which is favorable for improvingPetzval field and reducing the size of the imaging apparatus whileproviding high image quality. Moreover, it is favorable for avoiding thetotal reflection caused by excessive curvature of the surface of theseventh lens element and the light spots formed in the image. At leastone of an object-side surface and the image-side surface of the seventhlens element can include at least one inflection point, which cancorrect distortion and avoid vignetting generated on the imageperiphery.

At least one surface of the seven lens elements is aspheric, which isfavorable for correcting aberrations of the off-axis region, decreasingthe required number of the lens elements, and reducing the total tracklength. Alternatively, at least one surface of each lens element of theseven lens elements can be aspheric. Therefore, aberrations can becorrected, and the total track length of the photographing lens assemblycan be reduced to achieve compactness.

There is an air gap in a paraxial region between each of adjacent lenselements of the seven lens elements. Therefore, the assemblingcomplexity can be simplified so as to enhance the yield rate.Specifically, each of the first through seventh lens elements is asingle and non-cemented lens element, every adjacent lens elements arenot cemented, and there is a space between the two lens elements. Inother words, of the first lens element, the second lens element, thethird lens element, the fourth lens element, the fifth lens element, thesixth lens element and the seventh lens element of the photographinglens assembly, there is a space in a paraxial region between everyadjacent lens elements. Moreover, the manufacturing process of thecemented lenses is more complex than the non-cemented lenses. Inparticular, both cementing surfaces of two cementing lens elements needto have accurate curvature to ensure these two lens elements will behighly cemented. However, during the cementing process, those two lenselements might not be highly cemented due to displacement and it isthereby not favorable for the image quality of the photographing lensassembly. Therefore, according to the photographing lens assembly of thepresent disclosure, an air gap in a paraxial region between everyadjacent lens elements of the first lens element, the second lenselement, the third lens element, the fourth lens element, the fifth lenselement, the sixth lens element and the seventh lens element can avoidthe problem generated by the cemented lens elements.

At least five lens elements of the seven lens elements can be made ofplastic materials. Therefore, the weight of the imaging apparatus can bereduced, and the design freedom for lens elements can be increased.Accordingly, it is favorable for reducing the volume of the imagingapparatus.

When a focal length of the first lens element is f1, and a focal lengthof the third lens element is f3, the following condition can besatisfied: |f3/f1|<2.0. Therefore, the distribution of the refractivepower of the first lens element and the third lens element can beeffectively controlled, which can provide the photographing lensassembly with a wider imaging range. Preferably, the following conditioncan be satisfied: |f3/f1|<0.90. More preferably, the following conditioncan be satisfied: |f3/f1|<0.75. More preferably, the following conditioncan be satisfied: |f3/f1|<0.55. More preferably, the following conditioncan be satisfied: |f3/f1|<0.25.

When an axial distance between the object-side surface of the first lenselement and an image surface is TL, and a maximum image height of thephotographing lens assembly is ImgH, the following condition can besatisfied: 1.0<TL/ImgH<2.70. Therefore, it is favorable for providingcompactness and a sufficient range for receiving light rays, which canprevent image vignetting. Preferably, the following condition can besatisfied: 1.0<TL/ImgH<2.0. More preferably, the following condition canbe satisfied: 1.0<TL/ImgH<1.75.

When a curvature radius of an object-side surface of the third lenselement is R5, and a curvature radius of an image-side surface of thethird lens element is R6, the following condition can be satisfied:−5.0<(R5+R6)/(R5-R6). Therefore, the symmetry of the photographing lensassembly can be enhanced so as to avoid excessive aberrations.Preferably, the following condition can be satisfied:0.10<(R5+R6)/(R5−R6)<8.0. More preferably, the following condition canbe satisfied: 0.50<(R5+R6)/(R5−R6)<2.0.

When the focal length of the first lens element is f1, and a focallength of the fifth lens element is f5, the following condition can besatisfied: |f5/f1|<0.70. Therefore, the distribution of the refractivepower of the first lens element and the fifth lens element can bebalanced, which can improve the ability of the fifth lens element forcontrolling light paths. Accordingly, the total track length of thephotographing lens assembly can be controlled to achieve compactness.Preferably, the following condition can be satisfied: |f5/f1|<0.35.

When a maximum of refractive indexes of all the lens elements of thephotographing lens assembly is Nmax, the following condition can besatisfied: 1.650<Nmax<1.750. Therefore, the arrangement of the lensmaterial of the photographing lens assembly can be balanced, which canenhance the image quality while reducing the total track length thereofand obtaining compactness.

At least two lens elements of all the lens elements of the photographinglens assembly can have Abbe numbers less than 25.0. With a largerdensity difference between a high dispersion material (i.e. with a smallAbbe number) and air, a stronger light refraction can be provided withinsmaller space, which is favorable for reducing the size of thephotographing lens assembly. Preferably, at least two lens elements ofall lens elements of the photographing lens assembly can have Abbenumbers less than 22.0.

When a curvature radius of an object-side surface of the fourth lenselement is R7, and a curvature radius of an image-side surface of thefourth lens element is R8, the following condition can be satisfied:−1.80<(R7+R8)/(R7−R8)<4.0. Therefore, surface shapes of the fourth lenselement can be balanced, which is favorable for increasing the symmetryof the photographing lens assembly so as to maintain better imagequality.

When half of a maximum field of view of the photographing lens assemblyis HFOV, the following condition can be satisfied: 40.0degrees<HFOV<70.0 degrees. Therefore, the field of view of thephotographing lens assembly can be effectively controlled so as toobtain a larger image capturing range. Accordingly, it is favorable forobtaining more image information.

The photographing lens assembly can further include an aperture stop.When an axial distance between the aperture stop and the object-sidesurface of the second lens element is Dsr3, an axial distance betweenthe aperture stop and the image-side surface of the second lens elementis Dsr4, an axial distance between the aperture stop and the object-sidesurface of the third lens element is Dsr5, an axial distance between theaperture stop and the image-side surface of the third tens element isDsr6, the following conditions can be satisfied: |Dsr4/Dsr3|<1.0; and|Dsr5/Dsr6|<1.0. Therefore, the position of the aperture stop can becontrolled for balancing the field of view and the total track length,which is favorable for the compactness of the electronic device andincreasing the utility.

When a maximum optical effective radius of the object-side surface ofthe first lens element is Y11, and a maximum optical effective radius ofthe image-side surface of the seventh lens element is Y72, the followingcondition can be satisfied: 0.50<Y11/Y72<1.0. Therefore, the size ofopenings on the object side and image side of the imaging apparatus canbe controlled for enhancing relative illumination and the symmetry ofthe photographing lens assembly so as to reduce aberrations.

When a focal length of the photographing lens assembly is f, and acomposite focal length of the first lens element and the second lenselement is f12, the following condition can be satisfied:−0.10<f/f12<0.35. Therefore, the refractive power of the photographinglens assembly can be balanced, which is favorable for featuring thephotographing lens assembly with a wider field of view and compactness.

When a displacement in parallel with an optical axis from an axialvertex on the image-side surface of the sixth lens element to anon-axial critical point on the image-side surface of the sixth lenselement is SAGc62, and a vertical distance between the non-axialcritical point on the image-side surface of the sixth lens element andthe optical axis is Yc62, all non-axial critical points on theimage-side surface of the sixth lens element can satisfy the followingcondition: |SAGc62/Yc62|<0.10. By controlling the surface shape of thesixth lens element, the curvature of the lens element can be effectivelycontrolled, so that the bulky volume of the imaging apparatus caused bythe excessive space occupied by the lens element can be avoided.Moreover, the molding difficulty caused by an excessive curvature of thelens element can also be avoided.

When the focal length of the photographing lens assembly is f, and anentrance pupil diameter of the photographing lens assembly is EPD, thefollowing condition can be satisfied: 0.80<f/EPD≤2.30. Therefore, thelight amount received by the photographing lens assembly can beincreased, so that the captured image can be clearer.

When the vertical distance between the non-axial critical point on theimage-side surface of the sixth lens element and the optical axis isYc62, and a vertical distance between a non-axial critical point on theimage-side surface of the seventh lens element and the optical axis isYc72, the following condition can be satisfied: 0.10<Yc62/Yc72<1.50.Therefore, aberrations of the off-axis region can be corrected, and thefield curvature of the photographing lens assembly can be wellcontrolled.

When the focal length of the photographing lens assembly is f, acurvature radius of an object-side surface of one of the lens elementsof the photographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, at least one of the lens elements (the first lenselement to the seventh lens element) can satisfy the followingcondition: |f/Rf|+|f/Rr|<0.50. Therefore, the curvature of the lenselement can be reduced, so that the lens element can be served as acorrection lens for correcting aberrations. Preferably, the followingcondition can be satisfied: |f/Rf|+|f/Rr|<0.38.

When a curvature radius of the object-side surface of the first lenselement is R1, and a curvature radius of the image-side surface of thefirst lens element is R2, the following condition can be satisfied:−1.80<(R1+R2)/(R1−R2). Therefore, the shape of the first lens elementcan be controlled, which can ensure that the incident angles of lightrays on the surface of the lens element is proper, and the totalreflection can be prevented. Preferably, the following condition can besatisfied: −1.0<(R1+R2)/(R1−R2)<8.0. More preferably, the followingcondition can be satisfied: 0<(R1+R2)/(R1−R2)<6.0. More preferably, thefollowing condition can be satisfied: 0<(R1+R2)/(R1−R2)<2.50. Morepreferably, the following condition can be satisfied:0<(R1+R2)/(R1−R2)<1.80.

When the maximum optical effective radius of the object-side surface ofthe first lens element is Y11, a maximum optical effective radius of theobject-side surface of the second lens element is Y21, a maximum opticaleffective radius of the object-side surface of the third lens element isY31, a maximum optical effective radius of the object-side surface ofthe fourth lens element is Y41, and a maximum optical effective radiusof the object-side surface of the fifth lens element is Y51, thefollowing conditions can be satisfied: Y11>Y21; Y11>Y31; Y11>Y41; andY11>Y51. Therefore, the sizes of the lens elements can be controlled toensure that a sufficient area of the first lens element can be providedto receive a larger range of light rays, so that the image brightnesscan be enhanced.

When the focal length of the photographing lens assembly is f, and thefocal length of the first lens element is f1, the following conditioncan be satisfied: −0.30<f/f1<0.50. Therefore, the distribution of therefractive power of the photographing lens assembly can be balanced soas to effectively reduce the sensitivity.

When a central thickness of the fourth lens element is CT4, and acentral thickness of the fifth lens element is CT5, the followingcondition can be satisfied: 0.10<CT4/CT5<0.85. Therefore, the centralthicknesses of the fourth lens element and the fifth lens element can bebalanced, so that deformation due to an excessively thin thickness oruneven molding due to an excessively thick thickness can be prevented.Preferably, the following condition can be satisfied: 0.10<CT4/CT5<0.65.

When an axial distance between the aperture stop and the image-sidesurface of the seventh lens element is SD, and an axial distance betweenthe object-side surface of the first lens element and the image-sidesurface of the seventh lens element is TD, the following condition canbe satisfied: 0.65<SD/TD<0.85. Therefore, the relative position of theaperture stop in the photographing lens assembly can be balanced, whichis favorable for adjusting the relationship between the field of viewand the total track length.

When the focal length of the photographing lens assembly is f, the focallength of the first lens element is f1, a focal length of the secondlens element is f2, the focal length of the third lens element is f3, afocal length of the fourth lens element is f4, the focal length of thefifth lens element is f5, a focal length of the sixth lens element isf6, a focal length of the seventh lens element is f7, a focal length ofi-th lens element is fi, and a minimum of values of |f/fi| is |f/fi|min,the following condition can be satisfied: |f/fi|min<0.10, wherein i=1-7.Therefore, the ability of the photographing lens assembly for correctingaberrations can be enhanced, which is favorable the balance of theaberrations.

When the focal length of the photographing lens assembly is f, and themaximum image height of the photographing lens assembly is ImgH, thefollowing condition can be satisfied: 0.65<f/ImgH<1.0. Therefore, thephotographing range of the photographing lens assembly can beeffectively controlled to enlarge the field of view, and various usagerequirements can be satisfied.

When the focal length of the photographing lens assembly is f, the focallength of the first lens element is f1, and the focal length of thesecond lens element is f2, the following condition can be satisfied:|f/f1|+|f/f2|<0.50. Therefore, excessive aberrations caused by toostrong refractive power of a single lens element can be avoided.Meanwhile, the image quality can be enhanced. Preferably, the followingcondition can be satisfied: |f/f1|+|f/f2|<0.30.

Each of the aforementioned features of the photographing lens assemblycan be utilized in numerous combinations, so as to achieve thecorresponding functionality.

According to the present disclosure, the lens elements of thephotographing lens assembly can be made of either glass or plasticmaterial. When the lens elements are made of glass material, therefractive power distribution of the photographing lens assembly may bemore flexible. The glass lens element can either be made by grinding ormolding. When the lens elements are made of plastic material, themanufacturing cost can be effectively reduced. Furthermore, surfaces ofeach lens element can be arranged to be aspheric (ASP), which allows formore controllable variables for eliminating the aberration thereof, therequired number of the lens elements can be decreased, and the totaltrack length of the photographing lens assembly can be effectivelyreduced. The aspheric surfaces may be formed by plastic injectionmolding or glass molding.

According to the photographing lens assembly of the present disclosure,when a surface of a lens element is aspheric, it indicates that thecomplete optical effective area or a partial of the optical effectivearea of the surface of the lens element can be aspheric.

According to the photographing lens assembly of the present disclosure,each of an object-side surface and an image-side surface of a lenselement has a paraxial region and an off-axis region. The paraxialregion refers to the region of the surface where light rays travel closeto the optical axis, and the off-axis region refers to the region of thesurface away from the paraxial region. Particularly unless otherwisespecified, when the lens element has a convex surface, it indicates thatthe surface can be convex in the paraxial region thereof; when the lenselement has a concave surface, it indicates that the surface can beconcave in the paraxial region thereof. According to the photographinglens assembly of the present disclosure, the refractive power of a lenselement being positive or negative or the focal length of the lenselement may refer to the refractive power or the focal length in theparaxial region of the lens element.

According to the photographing lens assembly of the present disclosure,the image surface, depending on the corresponding image sensor, can be aplanar surface or a curved surface, particularly a curved surface beingconcave toward the object side. According to the photographing lensassembly of the present disclosure, at least one image correctingelement (such as a field flattener) can be selectively disposed betweena lens element closest to the image surface and the image surface so asto correct image aberrations (such as the field curvature). Propertiesof the image correcting element, such as curvature, thickness,refractive index, position, surface shape (convex/concave,spherical/aspheric/diffractive/Fresnel etc.) can be adjusted accordingto the requirements of the imaging apparatus. In general, the imagecorrecting element is preferably a thin plano-concave element having aconcave surface facing toward the object side and is disposed close tothe image surface.

According to the photographing lens assembly of the present disclosure,the photographing lens assembly can include at least one stop, which canbe disposed in front of the first lens element (i.e. between an imagedobject and the first lens element), between any two lens elements orbehind the last lens element (i.e. between the seventh lens element andthe image surface). The stop can be a glare stop, a field stop, etc.Therefore, the stray light can be eliminated, and the image quality canbe improved.

According to the photographing lens assembly of the present disclosure,an aperture stop can be configured as a front stop or a middle stop. Afront stop is disposed between an imaged object and the first lenselement, and a middle stop is disposed between the first lens elementand the image surface. The front stop can provide a longer distancebetween an exit pupil of the photographing lens assembly and the imagesurface to enable a telecentric effect, and thereby can improve theimage-sensing efficiency of an image sensor. The middle stop isfavorable for enlarging the field of view of the photographing lensassembly and thereby provides a wider field of view for the same.

According to the photographing lens assembly of the present disclosure,a critical point is a non-axial point of the lens surface where itstangent is perpendicular to the optical axis.

According to the photographing lens assembly of the present disclosure,an inflection point is a point on a curve of a lens surface ranging froma paraxial region to an off-axis region of the lens surface where thecenter of curvature of the curve changes from the object side to theimage side (or from the image side to the object side).

According to the photographing lens assembly of the present disclosure,the photographing lens assembly can be applied to 3D (three-dimensional)image capturing applications, in products such as digital cameras,mobile devices, digital tablets, smart TVs, network monitoring devices,motion sensing to input devices, driving recorders, rear view camerasystems, wearable devices, unmanned aerial vehicles, and otherelectronic imaging products.

According to the present disclosure, an imaging apparatus is provided.The imaging apparatus includes the aforementioned photographing lensassembly according to the present disclosure and an image sensor,wherein the image sensor is disposed on or near the image surface of theaforementioned photographing lens assembly. The photographing lensassembly is featured with a large field of view and a short total tracklength. Preferably, the imaging apparatus can further include a barrelmember, a holder member or a combination thereof.

According to the present disclosure, an electronic device is provided,wherein the electronic device includes the aforementioned imagingapparatus. Therefore, it is favorable for enhancing the image quality.Besides the aforementioned imaging apparatus, the electronic device canfurther include another photographing lens set. The field of view of thephotographing lens set is smaller than that of the photographing lensassembly of the imaging apparatus. The two lens sets (i.e., thephotographing lens set and the photographing lens assembly of theimaging apparatus) can be connected by a processor to achieve the zoomeffect. Preferably, the electronic device can further include, but notlimited to, a control unit, a display, a storage unit, a random accessmemory unit (RAM) or a combination thereof.

According to the above description of the present disclosure, thefollowing 1st-13th specific embodiments are provided for furtherexplanation.

1st Embodiment

FIG. 1 is a schematic view of an imaging apparatus according to the 1stembodiment of the present disclosure. FIG. 2 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 1st embodiment. In FIG. 1, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 195. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 110, a second lens element 120, an aperture stop 100, a thirdlens element 130, a fourth lens element 140, a fifth lens element 150, asixth lens element 160, a seventh lens element 170, a filter 180 and animage surface 190. The image sensor 195 is disposed on the image surface190 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (110, 120, 130, 140, 150, 160 and 170)without additional one or more lens elements inserted between the firstlens element 110 and the seventh lens element 170, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (110-170).

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex in a paraxial region thereof and animage-side surface 112 being convex in a paraxial region thereof. Thefirst lens element 110 is made of a plastic material, and has theobject-side surface 111 and the image-side surface 112 being bothaspheric. Furthermore, the object-side surface 111 of the first lenselement 110 includes at least one inflection point.

The second lens element 120 with negative refractive power has anobject-side surface 121 being convex in a paraxial region thereof and animage-side surface 122 being concave in a paraxial region thereof. Thesecond lens element 120 is made of a plastic material, and has theobject-side surface 121 and the image-side surface 122 being bothaspheric.

The third lens element 130 with positive refractive power has anobject-side surface 131 being concave in a paraxial region thereof andan image-side surface 132 being convex in a paraxial region thereof. Thethird lens element 130 is made of a plastic material, and has theobject-side surface 131 and the image-side surface 132 being bothaspheric.

The fourth lens element 140 with negative refractive power has anobject-side surface 141 being convex in a paraxial region thereof and animage-side surface 142 being concave in a paraxial region thereof. Thefourth lens element 140 is made of a plastic material, and has theobject-side surface 141 and the image-side surface 142 being bothaspheric.

The fifth lens element 150 with positive refractive power has anobject-side surface 151 being concave in a paraxial region thereof andan image-side surface 152 being convex in a paraxial region thereof. Thefifth lens element 150 is made of a plastic material, and has theobject-side surface 151 and the image-side surface 152 being bothaspheric. Furthermore, each of the object-side surface 151 and theimage-side surface 152 of the fifth lens element 150 includes at leastone inflection point.

The sixth lens element 160 with negative refractive power has anobject-side surface 161 being concave in a paraxial region thereof andan image-side surface 162 being convex in a paraxial region thereof. Thesixth lens element 160 is made of a plastic material, and has theobject-side surface 161 and the image-side surface 162 being bothaspheric. Furthermore, each of the object-side surface 161 and theimage-side surface 162 of the sixth lens element 160 includes at leastone inflection point, and the image-side surface 162 of the sixth lenselement 160 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 170 with negative refractive power has anobject-side surface 171 being convex in a paraxial region thereof and animage-side surface 172 being concave in a paraxial region thereof. Theseventh lens element 170 is made of a plastic material, and has theobject-side surface 171 and the image-side surface 172 being bothaspheric. Furthermore, each of the object-side surface 171 and theimage-side surface 172 of the seventh lens element 170 includes at leastone inflection point, and the image-side surface 172 of the seventh lenselement 170 includes at least one convex shape in an off-axis regionthereof.

The filter 180 is made of a glass material and located between theseventh lens element 170 and the image surface 190, and will not affectthe focal length of the photographing lens assembly.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}\text{/}R} \right)\text{/}\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right) \times \left( {Y\text{/}R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$where,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from the optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient.

In the photographing lens assembly according to the 1st embodiment, whena focal length of the photographing lens assembly is f, an f-number ofthe photographing lens assembly is Fno, and half of a maximum field ofview of the photographing lens assembly is HFOV, these parameters havethe following values: f=3.16 mm; Fno=2.10; and HFOV=48.5 degrees.

In the photographing lens assembly according to the 1st embodiment, whena maximum of refractive indexes of all the lens elements (i.e., thefirst lens element 110, the second lens element 120, the third lenselement 130, the fourth lens element 140, the fifth lens element 150,the sixth lens element 160, and the seventh lens element 170) of thephotographing lens assembly is Nmax (i.e., the refractive index of thesecond lens element 120 in the 1st embodiment), the following conditionis satisfied: Nmax=1.669.

In the photographing lens assembly according to the 1st embodiment, whena central thickness of the fourth lens element 140 is CT4, and a centralthickness of the fifth lens element 150 is CT5, the following conditionis satisfied: CT4/CT5=0.33.

In the photographing lens assembly according to the 1st embodiment, whena curvature radius of the object-side surface 111 of the first lenselement 110 is R1, a curvature radius of the image-side surface 112 ofthe first lens element 110 is R2, a curvature radius of the object-sidesurface 131 of the third lens element 130 is R5, a curvature radius ofthe image-side surface 132 of the third lens element 130 is R6, acurvature radius of the object-side surface 141 of the fourth lenselement 140 is R7, and a curvature radius of the image-side surface 142of the fourth lens element 140 is R8, the following conditions aresatisfied: (R1+R2)/(R1−R2)=0.79; (R5+R6)/(R5−R6)=1.06; and(R7+R8)/(R7−R8)=3.19.

In the photographing lens assembly according to the 1st embodiment, whenthe focal length of the photographing lens assembly is f, a focal lengthof the first lens element 110 is f1, a composite focal length of thefirst lens element 110 and the second lens element 120 is f12, a focallength of the second lens element 120 is f2, a focal length of the thirdlens element 130 is f3, and a focal length of the fifth lens element 150is f5, the following conditions are satisfied: f/f1=0.10; f/f12=0.08;|f3/f1|=0.08; |f5/f1|=0.07; and |f/f1|+|f/f2|=0.13.

In the photographing lens assembly according to the 1st embodiment, whenthe focal length of the photographing lens assembly is f, the focallength of the first lens element 110 is f1, the focal length of thesecond lens element 120 is f2, the focal length of the third lenselement 130 is f3, a focal length of the fourth lens element 140 is f4,the focal length of the fifth lens element 150 is f5, a focal length ofthe sixth lens element 160 is f6, a focal length of the seventh lenselement 170 is f7, a focal length of i-th lens element is fi, and aminimum of values of |f/fi| is |f/fi|min, the following condition issatisfied: |f/fi|min=0.03, wherein i=1-7 (that is, |f/fi|min is aminimum absolute value of a ratio between the focal length of thephotographing lens assembly and the focal length of each lens element,and in the 1st embodiment, |f/fi|min=|f/f2|).

FIG. 19 is a schematic view showing parameters of Y11, Y21, Y31, Y41,Y51 and Y72 of the imaging apparatus according to the 1st embodiment inFIG. 1. In the photographing lens assembly according to the 1stembodiment, when a maximum optical effective radius of the object-sidesurface 111 of the first lens element 110 is Y11, and a maximum opticaleffective radius of the image-side surface 172 of the seventh lenselement 170 is Y72, the following condition is satisfied: Y11/Y72=0.69.

In the photographing lens assembly according to the 1st embodiment, whenan axial distance between the object-side surface 111 of the first lenselement 110 and the image surface 190 is TL, a maximum image height ofthe photographing lens assembly is ImgH (i.e., half of a diagonal lengthof an effective photosensitive area of the image sensor 195), the focallength of the photographing lens assembly is f, and an entrance pupildiameter of the photographing lens assembly is EPD, the followingconditions are satisfied: TL/ImgH=1.58; f/ImgH=0.86; and f/EPD=2.10.

In the photographing lens assembly according to the 1st embodiment, whenan axial distance between the aperture stop 100 and the image-sidesurface 172 of the seventh lens element 170 is SD, and an axial distancebetween the object-side surface 111 of the first lens element 110 andthe image-side surface 172 of the seventh lens element 170 is TD, thefollowing condition is satisfied: SD/TD=0.74.

Please refer to FIG. 21 and FIG. 22. FIG. 21 is a schematic view showingparameters of SAGc62 and Yc62 of the imaging apparatus according to the1st embodiment in FIG. 1. FIG. 22 is a schematic view showing aparameter of Yc72 of the imaging apparatus according to the 1stembodiment in FIG. 1. The critical points and related parameters ofother embodiments can refer to FIG. 21 and FIG. 22, and are not drawnaccording to each embodiment, respectively. In the photographing lensassembly according to the 1st embodiment, the image-side surface 162 ofthe sixth lens element 160 includes at least one critical point (asshown in FIG. 21), and the image-side surface 172 of the seventh lenselement 170 includes at least one critical point (as shown in FIG. 22).When a vertical distance between the non-axial critical point on theimage-side surface 162 of the sixth lens element 160 and the opticalaxis is Yc62, and a vertical distance between the non-axial criticalpoint on the image-side surface 172 of the seventh lens element 170 andthe optical axis is Yc72, the following conditions are satisfied:Yc62/Yc72=0.02 and 0.93, respectively (the image-side surface 162 of thesixth lens element 160 includes, in order from the optical axis to anoff-axis region thereof, two critical points. Only one of the twocritical points is labeled in FIG. 21).

Please refer to FIG. 21, in the photographing lens assembly according tothe 1st embodiment, when a displacement in parallel with the opticalaxis from an axial vertex on the image-side surface 162 of the sixthlens element 160 to the non-axial critical point on the image-sidesurface 162 of the sixth lens element 160 is SAGc62 (wherein thedisplacement towards the object side of the photographing lens assemblyis negative, and the displacement towards the image side of thephotographing lens assembly is positive), and the vertical distancebetween the non-axial critical point on the image-side surface 162 ofthe sixth lens element 160 and the optical axis is Yc62, all thenon-axial critical points on the image-side surface 162 of the sixthlens element 160 satisfy the following conditions: |SAGc62/Yc62|=0.000and 0.082, respectively (the image-side surface 162 of the sixth lenselement 160 includes, in order from the optical axis to an off-axisregion thereof, two critical points. Only one of the two critical pointsis labeled in FIG. 21).

FIG. 20 is a schematic view showing parameters of Dsr3, Dsr4, Dsr5 andDsr6 of the imaging apparatus according to the 1st embodiment in FIG. 1.In the photographing lens assembly according to the 1st embodiment, whenan axial distance between the aperture stop 100 and the object-sidesurface 121 of the second lens element 120 is Dsr3 (if a central pointof the aperture stop 100 is closer to the object side than an axialvertex on the object-side surface 121 of the second lens element 120thereto, Dsr3 is positive; if the central point of the aperture stop 100is closer to the image side than the axial vertex on the object-sidesurface 121 of the second lens element 120 thereto, Dsr3 is negative),an axial distance between the aperture stop 100 and the image-sidesurface 122 of the second lens element 120 is Dsr4 (if the central pointof the aperture stop 100 is closer to the object side than an axialvertex on the image-side surface 122 of the second lens element 120thereto, Dsr4 is positive; if the central point of the aperture stop 100is closer to the image side than the axial vertex on the image-sidesurface 122 of the second lens element 120 thereto, Dsr4 is negative),an axial distance between the aperture stop 100 and the object-sidesurface 131 of the third lens element 130 is Dsr5 (if the central pointof the aperture stop 100 is closer to the object side than an axialvertex on the object-side surface 131 of the third lens element 130thereto, Dsr5 is positive; if the central point of the aperture stop 100is closer to the image side than the axial vertex on the object-sidesurface 131 of the third lens element 130 thereto, Dsr5 is negative),and an axial distance between the aperture stop 100 and the image-sidesurface 132 of the third lens element 130 is Dsr6 (if the central pointof the aperture stop 100 is closer to the object side than an axialvertex on the image-side surface 132 of the third lens element 130thereto, Dsr6 is positive; if the central point of the aperture stop 100is closer to the image side than the axial vertex on the image-sidesurface 132 of the third lens element 130 thereto, Dsr6 is negative),the following conditions are satisfied: |Dsr4/Dsr3|=0.50; and|Dsr5/Dsr6|=0.05.

In the photographing lens assembly according to the 1st embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 110 through the seventh lens element170 is listed in the following table, wherein the curvature radius ofthe object-side surface 111 of the first lens element 110 is R1, thecurvature radius of the image-side surface 112 of the first lens element110 is R2, a curvature radius of the object-side surface 121 of thesecond lens element 120 is R3, a curvature radius of the image-sidesurface 122 of the second lens element 120 is R4, the curvature radiusof the object-side surface 131 of the third lens element 130 is R5, thecurvature radius of the image-side surface 132 of the third lens element130 is R6, the curvature radius of the object-side surface 141 of thefourth lens element 140 is R7, the curvature radius of the image-sidesurface 142 of the fourth lens element 140 is R8, a curvature radius ofthe object-side surface 151 of the fifth lens element 150 is R9, acurvature radius of the image-side surface 152 of the fifth lens element150 is R10, a curvature radius of the object-side surface 161 of thesixth lens element 160 is R11, a curvature radius of the image-sidesurface 162 of the sixth lens element 160 is R12, a curvature radius ofthe object-side surface 171 of the seventh lens element 170 is R13, anda curvature radius of the image-side surface 172 of the seventh lenselement 170 is R14.

1st Embodiment |f/Rf| + |f/R1| + |f/R2| 0.19 |f/Rf| +  |f/R9| + |f/R10|5.48 |f/Rr| |f/R3| + |f/R4| 3.24 |f/Rr| |f/R11| + |f/R12| 0.82 |f/R5| +|f/R6| 2.32 |f/R13| + |f/R14| 5.34 |f/R7| + |f/R8| 2.05

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 3.16 mm, Fno = 2.10, HFOV = 48.5 deg. SurfaceFocal # Curvature Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Lens 1 158.157 ASP 0.567 Plastic 1.534 55.9 31.71 2−18.933 ASP 0.177 3 Lens 2 2.025 ASP 0.234 Plastic 1.669 19.5 −123.36 41.885 ASP 0.235 5 Ape. Stop Plano 0.045 6 Lens 3 −45.644 ASP 0.809Plastic 1.544 56.0 2.65 7 −1.408 ASP 0.047 8 Lens 4 4.496 ASP 0.271Plastic 1.660 20.4 −7.86 9 2.351 ASP 0.583 10 Lens 5 −1.942 ASP 0.826Plastic 1.544 56.0 2.08 11 −0.822 ASP 0.030 12 Lens 6 −3.885 ASP 0.394Plastic 1.582 30.2 −6.69 13 −1435.341 ASP 0.077 14 Lens 7 1.974 ASP0.370 Plastic 1.544 56.0 −3.08 15 0.846 ASP 0.550 16 Filter Plano 0.210Glass 1.517 64.2 — 17 Plano 0.423 18 Image Plano — Reference wavelengthis 587.6 nm (d-line).

TABLE 2 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k =  2.0000E+01−6.1139E+01 −7.0690E+00 −5.1105E+00 −9.8569E+01 −9.3470E−01 −2.4926E+00A4 =  2.7873E−02  1.4104E−02 −2.5131E−02 −2.7004E−02 −7.0216E−02−6.7755E−02 −1.3797E−01 A6 = −8.7744E−03 −7.3079E−03 −1.0386E−01−5.9461E−02 −4.1366E−02  8.7265E−02  1.6648E−01 A8 =  2.8793E−03 1.5474E−03  4.9355E−02 −2.2357E−02 −7.0742E−02 −3.4976E−01 −2.0573E−01A10 = −8.1547E−04 −2.3336E−04  5.1236E−02  1.5098E−01 −5.0884E−02 4.0691E−01  1.6818E−01 A12 =  1.0569E−04  1.5712E−05 −2.6645E−02−2.0630E−01 −7.3799E−02 A14 = −4.9960E−06  1.3190E−02 Surface # 9 10 1112 13 14 15 k = −9.7020E+00 −3.2095E+00 −3.6697E+00  1.8923E+00−9.7199E+01 −4.1236E+00 −4.1385E+00 A4 = −6.7612E−02 −1.1572E−01−2.4088E−01  1.7159E−01  1.2326E−01 −9.0466E−02 −7.0944E−02 A6 = 9.1266E−02  8.0259E−02  3.2143E−01 −5.2320E−02 −8.5529E−02  1.7272E−02 2.7213E−02 A8 = −8.6679E−02 −2.0530E−02 −3.2025E−01 −3.7240E−02 3.0478E−02 −3.0195E−03 −9.0703E−03 A10 =  5.2329E−02  5.7096E−02 1.9662E−01  3.8657E−02 −6.6829E−03  1.3086E−03  2.0066E−03 A12 =−1.7163E−02 −5.2832E−02 −5.9078E−02 −1.4824E−02  8.6325E−04 −3.3174E−04−2.5708E−04 A14 =  2.3952E−03  1.8739E−02  7.1682E−03  2.7197E−03−5.6235E−05  3.6770E−05  1.7240E−05 A16 = −2.3637E−03 −1.2583E−04−1.9656E−04  1.1825E−06 −1.4895E−06 −4.6900E−07

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-18 represent the surfacessequentially arranged from the object side to the image side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A16 represent the asphericcoefficients ranging from the 4th order to the 16th order. The tablespresented below for each embodiment correspond to schematic parameterand aberration curves of each embodiment, and term definitions of thetables are the same as those in Table 1 and Table 2 of the 1stembodiment. Therefore, an explanation in this regard will not beprovided again.

Furthermore, in the photographing lens assembly according to the 1stembodiment, two lens elements of the first lens element 110, the secondlens element 120, the third lens element 130, the fourth lens element140, the fifth lens element 150, the sixth lens element 160, and theseventh lens element 170 have the Abbe numbers less than 25.0, which arethe second lens element 120 and the fourth lens element 140.

Please refer to FIG. 19. In the photographing lens assembly according tothe 1st embodiment, when the maximum optical effective radius of theobject-side surface 111 of the first lens element 110 is Y11, a maximumoptical effective radius of the object-side surface 121 of the secondlens element 120 is Y21, a maximum optical effective radius of theobject-side surface 131 of the third lens element 130 is Y31, a maximumoptical effective radius of the object-side surface 141 of the fourthlens element 140 is Y41, and a maximum optical effective radius of theobject-side surface 151 of the fifth lens element 150 is Y51, thefollowing conditions are satisfied: Y11>Y21; Y11>Y31; Y11>Y41; andY11>Y51.

2nd Embodiment

FIG. 3 is a schematic view of an imaging apparatus according to the 2ndembodiment of the present disclosure. FIG. 4 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 2nd embodiment. In FIG. 3, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 295. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 210, a second lens element 220, an aperture stop 200, a thirdlens element 230, a fourth lens element 240, a fifth lens element 250, asixth lens element 260, a seventh lens element 270, a filter 280 and animage surface 290. The image sensor 295 is disposed on the image surface290 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (210, 220, 230, 240, 250, 260 and 270)without additional one or more lens elements inserted between the firstlens element 210 and the seventh lens element 270, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (210-270).

The first lens element 210 with negative refractive power has anobject-side surface 211 being concave in a paraxial region thereof andan image-side surface 212 being convex in a paraxial region thereof. Thefirst lens element 210 is made of a plastic material, and has theobject-side surface 211 and the image-side surface 212 being bothaspheric. Furthermore, each of the object-side surface 211 and theimage-side surface 212 of the first lens element 210 includes at leastone inflection point.

The second lens element 220 with positive refractive power has anobject-side surface 221 being convex in a paraxial region thereof and animage-side surface 222 being concave in a paraxial region thereof. Thesecond lens element 220 is made of a plastic material, and has theobject-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with positive refractive power has anobject-side surface 231 being concave in a paraxial region thereof andan image-side surface 232 being convex in a paraxial region thereof. Thethird lens element 230 is made of a plastic material, and has theobject-side surface 231 and the image-side surface 232 being bothaspheric.

The fourth lens element 240 with negative refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being concave in a paraxial region thereof. Thefourth lens element 240 is made of a plastic material, and has theobject-side surface 241 and the image-side surface 242 being bothaspheric.

The fifth lens element 250 with positive refractive power has anobject-side surface 251 being concave in a paraxial region thereof andan image-side surface 252 being convex in a paraxial region thereof. Thefifth lens element 250 is made of a plastic material, and has theobject-side surface 251 and the image-side surface 252 being bothaspheric. Furthermore, each of the object-side surface 251 and theimage-side surface 252 of the fifth lens element 250 includes at leastone inflection point.

The sixth lens element 260 with negative refractive power has anobject-side surface 261 being concave in a paraxial region thereof andan image-side surface 262 being convex in a paraxial region thereof. Thesixth lens element 260 is made of a plastic material, and has theobject-side surface 261 and the image-side surface 262 being bothaspheric. Furthermore, each of the object-side surface 261 and theimage-side surface 262 of the sixth lens element 260 includes at leastone inflection point, and the image-side surface 262 of the sixth lenselement 260 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 270 with negative refractive power has anobject-side surface 271 being convex in a paraxial region thereof and animage-side surface 272 being concave in a paraxial region thereof. Theseventh lens element 270 is made of a plastic material, and has theobject-side surface 271 and the image-side surface 272 being bothaspheric. Furthermore, each of the object-side surface 271 and theimage-side surface 272 of the seventh lens element 270 includes at leastone inflection point, and the image-side surface 272 of the seventh lenselement 270 includes at least one convex shape in an off-axis regionthereof.

The filter 280 is made of a glass material and located between theseventh lens element 270 and the image surface 290, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 3.12 mm, Fno = 2.30, HFOV = 49.2 deg. SurfaceFocal # Curvature Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Lens 1 −10.455 ASP 0.567 Plastic 1.534 55.9 −36.76 2−22.800 ASP 0.177 3 Lens 2 3.605 ASP 0.235 Plastic 1.669 19.5 18.78 44.925 ASP 0.235 5 Ape. Stop Plano 0.045 6 Lens 3 −45.613 ASP 0.737Plastic 1.544 56.0 2.65 7 −1.408 ASP 0.037 8 Lens 4 4.217 ASP 0.271Plastic 1.660 20.4 −6.21 9 2.025 ASP 0.583 10 Lens 5 −1.932 ASP 0.742Plastic 1.544 56.0 1.99 11 −0.788 ASP 0.032 12 Lens 6 −3.229 ASP 0.394Plastic 1.582 30.2 −5.55 13 −9077.218 ASP 0.269 14 Lens 7 1.936 ASP0.283 Plastic 1.544 56.0 −3.26 15 0.878 ASP 0.550 16 Filter Plano 0.210Glass 1.517 64.2 — 17 Plano 0.481 18 Image Plano — Reference wavelengthis 587.6 nm (d-line).

TABLE 4 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k = −2.4653E+01−6.1316E+01 −7.0729E+00 −5.1057E+00 −9.8569E+01 −9.3688E−01 −2.5305E+00A4 =   4.0920E−02   6.1030E−02 −5.0886E−03 −31072E−03 −6.0179E−02  5.0482E−03 −1.0167E−01 A6 = −1.6993E−02 −7.0710E−02 −1.5482E−01−1.6211E−01 −7.3118E−02 −1.7671E−01   6.0455E−02 A8 =   6.4816E−03  3.3260E−02   7.2983E−02   1.9260E−01 −7.2839E−02   1.9012E−01−3.3531E−02 A10 = −2.4547E−03 −8.6303E−03   6.9565E−02 −3.8814E−02−7.0862E−02 −1.8841E−01   2.5211E−02 A12 =   4.3491E−04   1.2154E−03−3.7959E−02   2.9148E−02 −1.8248E−02 A14 = −1.6554E−05   5.5491E−03Surface # 9 10 11 12 13 14 15 k = −8.3658E+00 −3.2055E+00 −3.8467E+00  1.8942E+00 −9.7199E+01 −5.7316E+00 −4.1385E+00 A4 = −6.7642E−02−1.8424E−01 −3.9248E−01   1.6992E−01   6.1043E−02 −1.2456E−01−8.4247E−02 A6 =   9.1711E−02   1.5291E−01   6.2726E−01 −4.5392E02−5.1420E−02   5.9353E−02   3.5328E−02 A8 = −8.7922E−02 −8.3009E−02−7.4175E−01 −8.6726E−02   1.4121E−02 −2.1154E−02 −1.1041E−02 A10 =  5.3739E−02   1.1961E−01   5.2700E−01   9.5655E−02 −1.0385E−03  4.8139E−03   2.1873E−03 A12 = −1.7873E−02 −8.4433E−02 −1.8046E−01−4.3475E−02 −2.4058E−04 −6.2599E−04 −2.6003E−04 A14 =   2.5271E−03  2.7156E−02   2.3110E−02   9.7742E−03   5.3404E−05   4.2626E−05  1.6853E−05 A16 = −3.4967E−03   3.0233E−04 −8.9610E−04 −3.1744E−06−1.1859E−06 −4.5698E−07

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 3.12 |f/f1| + |f/f2| 0.25 Fno. 2.30 |f/fi|min 0.08HFOV [deg.] 49.2 Y11/Y72 0.58 Nmax 1.669 TL/ImgH 1.60 CT4/CT5 0.36f/ImgH 0.85 (R1 + R2)/(R1 − R2) −2.69 f/EPD 2.30 (R5 + R6)/(R5 − R6)1.06 SD/TD 0.74 (R7 + R8)/(R7 − R8) 2.85 Yc62/Yc72 0.68 f/f1 −0.08|SAGc62/Yc62| 0.022 f/f12 0.08 |Dsr4/Dsr3| 0.50 |f3/f1| 0.07 |Dsr5/Dsr6|0.06 |f5/f1| 0.05

In the photographing lens assembly according to the 2nd embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 210 through the seventh lens element270 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

2nd Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.44 |f/R3| + |f/R4| 1.50|f/R5| + |f/R6| 2.28 |f/R7| + |f/R8| 2.28 |f/R9| + |f/R10| 5.57|f/R11| + |f/R12| 0.97 |f/R13| + |f/R14| 5.16

Furthermore, in the photographing lens assembly according to the 2ndembodiment, two lens elements of the first lens element 210, the secondlens element 220, the third lens element 230, the fourth lens element240, the fifth lens element 250, the sixth lens element 260, and theseventh lens element 270 have the Abbe numbers less than 25.0, which arethe second lens element 220 and the fourth lens element 240.

In the photographing lens assembly according to the 2nd embodiment, whena maximum optical effective radius of the object-side surface 211 of thefirst lens element 210 is Y11, a maximum optical effective radius of theobject-side surface 221 of the second lens element 220 is Y21, a maximumoptical effective radius of the object-side surface 231 of the thirdlens element 230 is Y31, a maximum optical effective radius of theobject-side surface 241 of the fourth lens element 240 is Y41, and amaximum optical effective radius of the object-side surface 251 of thefifth lens element 250 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y61.

3rd Embodiment

FIG. 5 is a schematic view of an imaging apparatus according to the 3rdembodiment of the present disclosure. FIG. 6 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 3rd embodiment. In FIG. 5, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 395. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 310, a second lens element 320, an aperture stop 300, a thirdlens element 330, a fourth lens element 340, a fifth lens element 350, asixth lens element 360, a seventh lens element 370, a filter 380 and animage surface 390. The image sensor 395 is disposed on the image surface390 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (310, 320, 330, 340, 350, 360 and 370)without additional one or more lens elements inserted between the firstlens element 310 and the seventh lens element 370, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (310-370).

The first lens element 310 with positive refractive power has anobject-side surface 311 being concave in a paraxial region thereof andan image-side surface 312 being convex in a paraxial region thereof. Thefirst lens element 310 is made of a plastic material, and has theobject-side surface 311 and the image-side surface 312 being bothaspheric. Furthermore, the object-side surface 311 of the first lenselement 310 includes at least one inflection point.

The second lens element 320 with negative refractive power has anobject-side surface 321 being convex in a paraxial region thereof and animage-side surface 322 being concave in a paraxial region thereof. Thesecond lens element 320 is made of a plastic material, and has theobject-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with positive refractive power has anobject-side surface 331 being convex in a paraxial region thereof and animage-side surface 332 being convex in a paraxial region thereof. Thethird lens element 330 is made of a glass material, and has theobject-side surface 331 and the image-side surface 332 being bothaspheric.

The fourth lens element 340 with negative refractive power has anobject-side surface 341 being convex in a paraxial region thereof and animage-side surface 342 being concave in a paraxial region thereof. Thefourth lens element 340 is made of a plastic material, and has theobject-side surface 341 and the image-side surface 342 being bothaspheric.

The fifth lens element 350 with positive refractive power has anobject-side surface 351 being concave in a paraxial region thereof andan image-side surface 352 being convex in a paraxial region thereof. Thefifth lens element 350 is made of a plastic material, and has theobject-side surface 351 and the image-side surface 352 being bothaspheric. Furthermore, each of the object-side surface 351 and theimage-side surface 352 of the fifth lens element 350 includes at leastone inflection point.

The sixth lens element 360 with negative refractive power has anobject-side surface 361 being concave in a paraxial region thereof andan image-side surface 362 being convex in a paraxial region thereof. Thesixth lens element 360 is made of a plastic material, and has theobject-side surface 361 and the image-side surface 362 being bothaspheric. Furthermore, each of the object-side surface 361 and theimage-side surface 362 of the sixth lens element 360 includes at leastone inflection point, and the image-side surface 362 of the sixth lenselement 360 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 370 with negative refractive power has anobject-side surface 371 being convex in a paraxial region thereof and animage-side surface 372 being concave in a paraxial region thereof. Theseventh lens element 370 is made of a plastic material, and has theobject-side surface 371 and the image-side surface 372 being bothaspheric. Furthermore, each of the object-side surface 371 and theimage-side surface 372 of the seventh lens element 370 includes at leastone inflection point, and the image-side surface 372 of the seventh lenselement 370 includes at least one convex shape in an off-axis regionthereof.

The filter 380 is made of a glass material and located between theseventh lens element 370 and the image surface 390, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 3.16 mm, Fno = 2.10, HFOV = 48.4 deg. SurfaceAbbe Focal # Curvature Radius Thickness Material Index # Length 0 ObjectPlano Infinity 1 Lens 1 −49.325 ASP 0.558 Plastic 1.534 55.9 24.51 2−10.382 ASP 0.177 3 Lens 2 1.755 ASP 0.234 Plastic 1.669 19.5 −39.58 41.558 ASP 0.235 5 Ape. Stop Plano 0.045 6 Lens 3 53.419 ASP 0.810 Glass1.540 59.7 2.63 7 −1.453 ASP 0.030 8 Lens 4 4.450 ASP 0.271 Plastic1.660 20.4 −8.01 9 2.357 ASP 0.583 10 Lens 5 −1.924 ASP 0.706 Plastic1.544 56.0 2.25 11 −0.846 ASP 0.030 12 Lens 6 −3.794 ASP 0.394 Plastic1.634 23.8 −7.14 13 −24.446 ASP 0.112 14 Lens 7 1.974 ASP 0.430 Plastic1.544 56.0 −3.08 15 0.837 ASP 0.550 16 Filter Plano 0.210 Glass 1.51764.2 — 17 Plano 0.368 18 Image Plano — Reference wavelength is 587.6 nm(d-line).

TABLE 6 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k =   2.0000E+01−3.8715E+01 −7.0690E+00 −5.1105E+00 −3.8715E+01 −9.3470E−01 −2.4926E+00A4 =   3.3738E−02   1.4858E−02 −1.1324E−02 −1.3987E−02 −7.2828E−02−5.3670E−02 −1.2255E−01 A6 = −1.2950E−02 −7.6377E−03 −1.5783E−01−1.1240E−01 −3.3601E−03   2.7671E−02   1.3388E−01 A8 =   4.0308E−03  1.5201E−03   1.3132E−01   6.6394E−02 −1.6633E−01 −2.2267E−01−1.5527E−01 A10 = −1.0065E−03 −1.9485E−04 −1.0980E−02   8.9283E−02  2.5881E−02   2.7489E−01   1.2900E−01 A12 =   1.2818E−04   1.1300E−05−6.1983E−03 −1.5725E−01 −5.9155E−02 A14 = −6.2496E−06   1.1076E−02Surface # 9 10 11 12 13 14 15 k = −9.2478E+00 −3.2095E+00 −3.7826E+00  1.8923E+00 −3,8715E+01 −7.3601E+00 −4.1385E+00 A4 = −6.7612E−02−1.2943E−01 −2.4191E−01   2.2639E−01   1.5239E−01 −6.8036E−02−7.5500E−02 A6 =   9.1266E−02   1.1902E−01   3.4385E−01 −1.1808E−01−1.1226E−01 −1.1967E−03   2.7808E−02 A8 = −8.6679E−02 −6.7130E−02−3.5096E−01   6.1122E−03   4.2195E−02   4.8684E−03 −8.9527E−03 A10 =  5.2329E−02   8.1411E−02   2.2176E−01   2.2085E−02 −1.0017E−02−4.2592E−04   1.9838E−03 A12 = −1.7163E−02 −5.7365E−02 −6.8650E−02−1.1499E−02   1.4031E−03 −1.3749E−04 −2.5620E−04 A14 =   2.3952E−03  1.8801E−02   8.6083E−03   2.4407E−03 −9.9111E−05   2.7045E−05  1.7240E−05 A16 = −2.3718E−03 −1.6589E−04 −1.9477E−04   2.2598E−06−1.3639E−06 −4.6900E−07

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 3.16 |f/f1|+ |f/f2| 0.21 Fno. 2.10 |f/fi|min 0.08HFOV [deg.] 48.4 Y11/Y72 0.70 Nmax 1.669 TL/ImgH 1.55 CT4/CT5 0.38f/ImgH 0.85 (R1 + R2)/(R1 − R2) 1.53 f/EPD 2.10 (R5 + R6)/(R5 − R6) 0.95SD/TD 0.74 (R7 + R8)/(R7 − R8) 3.25 Yc62/Yc72 0.16, 0.88 f/f1 0.13|SAGc62/Yc62| 0.003, 0.071 f/f12 0.06 |Dsr4/Dsr3| 0.50 |f3/f1| 0.11|Dsr5/Dsr6| 0.05 |f5/f1| 0.09

In the photographing lens assembly according to the 3rd embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 310 through the seventh lens element370 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

3rd Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.37 |f/R3| + |f/R4| 3.83|f/R5| + |f/R6| 2.23 |f/R7| + |f/R8| 2.05 |f/R9| + |f/R10| 5.38|f/R11| + |f/R12| 0.96 |f/R13| + |f/R14| 5.38

Furthermore, in the photographing lens assembly according to the 3rdembodiment, three lens elements of the first lens element 310, thesecond lens element 320, the third lens element 330, the fourth lenselement 340, the fifth lens element 350, the sixth lens element 360, andthe seventh lens element 370 have the Abbe numbers less than 25.0, whichare the second lens element 320, the fourth lens element 340 and thesixth lens element 360.

In the photographing lens assembly according to the 3nd embodiment, whena maximum optical effective radius of the object-side surface 311 of thefirst lens element 310 is Y11, a maximum optical effective radius of theobject-side surface 321 of the second lens element 320 is Y21, a maximumoptical effective radius of the object-side surface 331 of the thirdlens element 330 is Y31, a maximum optical effective radius of theobject-side surface 341 of the fourth lens element 340 is Y41, and amaximum optical effective radius of the object-side surface 351 of thefifth lens element 350 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

4th Embodiment

FIG. 7 is a schematic view of an imaging apparatus according to the 4thembodiment of the present disclosure. FIG. 8 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 4th embodiment. In FIG. 7, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 495. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 410, a second lens element 420, an aperture stop 400, a thirdlens element 430, a fourth lens element 440, a fifth lens element 450, asixth lens element 460, a seventh lens element 470, a filter 480 and animage surface 490. The image sensor 495 is disposed on the image surface490 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (410, 420, 430, 440, 450, 460 and 470)without additional one or more lens elements inserted between the firstlens element 410 and the seventh lens element 470, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (410-470).

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex in a paraxial region thereof and animage-side surface 412 being convex in a paraxial region thereof. Thefirst lens element 410 is made of a plastic material, and has theobject-side surface 411 and the image-side surface 412 being bothaspheric. Furthermore, the object-side surface 411 of the first lenselement 410 includes at least one inflection point.

The second lens element 420 with positive refractive power has anobject-side surface 421 being convex in a paraxial region thereof and animage-side surface 422 being concave in a paraxial region thereof. Thesecond lens element 420 is made of a plastic material, and has theobject-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with positive refractive power has anobject-side surface 431 being concave in a paraxial region thereof andan image-side surface 432 being convex in a paraxial region thereof. Thethird lens element 430 is made of a glass material, and has theobject-side surface 431 and the image-side surface 432 being bothaspheric.

The fourth lens element 440 with negative refractive power has anobject-side surface 441 being concave in a paraxial region thereof andan image-side surface 442 being concave in a paraxial region thereof.The fourth lens element 440 is made of a plastic material, and has theobject-side surface 441 and the image-side surface 442 being bothaspheric.

The fifth lens element 450 with positive refractive power has anobject-side surface 451 being concave in a paraxial region thereof andan image-side surface 452 being convex in a paraxial region thereof. Thefifth lens element 450 is made of a plastic material, and has theobject-side surface 451 and the image-side surface 452 being bothaspheric. Furthermore, each of the object-side surface 451 and theimage-side surface 452 of the fifth lens element 450 includes at leastone inflection point.

The sixth lens element 460 with negative refractive power has anobject-side surface 461 being concave in a paraxial region thereof andan image-side surface 462 being convex in a paraxial region thereof. Thesixth lens element 460 is made of a plastic material, and has theobject-side surface 461 and the image-side surface 462 being bothaspheric. Furthermore, each of the object-side surface 461 and theimage-side surface 462 of the sixth lens element 460 includes at leastone inflection point, and the image-side surface 462 of the sixth lenselement 460 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 470 with negative refractive power has anobject-side surface 471 being convex in a paraxial region thereof and animage-side surface 472 being concave in a paraxial region thereof. Theseventh lens element 470 is made of a plastic material, and has theobject-side surface 471 and the image-side surface 472 being bothaspheric. Furthermore, each of the object-side surface 471 and theimage-side surface 472 of the seventh lens element 470 includes at leastone inflection point, and the image-side surface 472 of the seventh lenselement 470 includes at least one convex shape in an off-axis regionthereof.

The filter 480 is made of a glass material and located between theseventh lens element 470 and the image surface 490, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f= 3.14 mm, Fno = 2.10, HFOV = 48.3 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Lens 1 90.074 ASP 0.556 Plastic 1.534 55.9 20.11 2−12.159 ASP 0.138 3 Lens 2 1.816 ASP 0.249 Plastic 1.669 19.5 415.21 41.728 ASP 0.223 5 Ape. Stop Plano 0.066 6 Lens 3 −50.946 ASP 0.790 Glass1.583 46.5 2.32 7 −1.324 ASP 0.030 8 Lens 4 −11.343 ASP 0.357 Plastic1.660 20.4 −4.89 9 4.560 ASP 0.500 10 Lens 5 −1.802 ASP 0.759 Plastic1.544 56.0 2.18 11 −0.822 ASP 0.031 12 Lens 6 −3.599 ASP 0.476 Plastic1.634 23.8 −7.10 13 −18.907 ASP 0.069 14 Lens 7 1.978 ASP 0.446 Plastic1.544 56.0 −3.18 15 0.850 ASP 0.550 16 Filter Plano 0.210 Glass 1.51764.2 — 17 Plano 0.370 18 Image Plano — Reference wavelength is 587.6 nm(d-line).

TABLE 8 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k =   8.1690E+00−3.8715E+01 −6.4959E+00 −5.1467E+00   2.0000E+01 −9.9424E−01 −2.9357E+01A4 =   3.3315E−02   1.1991E−02 −4.9351E−03   1.9128E−03 −7.9186E−02  2.8048E−02 −2.9600E−02 A6 = −1.2578E−02 −4.7974E−03 −1.2953E−01−1.8222E−01 −1.4299E−02 −2.3453E−01 −6.6380E−02 A8 =   4.3032E−03  6.1850E−04   7.6930E−02   1.9095E−01 −1,8732E−01   1.3326E−01  1.3860E−02 A10 = −1.1687E−03 −6.5396E−05   2.6382E−02 −1.0178E−02−1.8226E−02   4.0098E−02   1.1755E−01 A12 =   1.5297E−04   5.3852E−06−1.5962E−02 −1.0827E−01 −1.1708E−01 A14 = −7.2084E−06   3.3426E−02Surface # 9 10 11 12 13 14 15 k = −1.5943E+01 −3.3480E4−00 −3.6671E+00  1.1487E+00   4.2983E+00 −5.6779E+00 −3.9712E+00 A4 = −7.2926E−02−1.5935E−01 −2.4404E−01   2.2469E−01   1.2960E−01 −4.8126E−02−5.5367E−02 A6 =   8.2725E−02   1.8207E−01   3.4067E−01 −1.5068E−01−8.6263E−02 −1.0478E−03   1.8756E−02 A8 = −8.7103E−02 −1.4047E−01−3.7959E−01   6.1084E−02   3.1468E−02   2.8707E−03 −5.7901E−03 A10 =  7.1128E−02   1.3808E−01   2.8263E−01 −1.5882E−02 −7.6575E−03−3.0623E−04   1.1951E−03 A12 = −2.9881E−02 −7.9949E−02 −1.1673E−01  2.3693E−03   1.1761E−03 −3.3588E−05 −1.3887E−04 A14 =   4.7723E−03  2.2157E−02   2.5021E−02 −1.7144E−04 −1.0228E−04   7.2345E−06  8.2301E−06 A16 = −2.3585E−03 −2.1991E−03   3.5257E−06   3.7347E−06−3.2260E−07 −1.9443E−07

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 3.14 |f/f1|+ |f/f2| 0.16 Fno. 2.10 |f/fi|min 0.01HFOV [deg.] 48.3 Y11/Y72 0.68 Nmax 1.669 TL/ImgH 1.57 CT4/CT5 0.47f/ImgH 0.85 (R1 + R2)/(R1 − R2) 0.76 f/EPD 2.10 (R5 + R6)/(R5 − R6) 1.05SD/TD 0.75 (R7 + R8)/(R7 − R8) 0.43 Yc62/Yc72 0.17, 0.79 f/f1 0.16|SAGc62/Yc62| 0.004, 0.066 f/f12 0.17 |Dsr4/Dsr3| 0.47 |f3/f1| 0.12|Dsr5/Dsr6| 0.08 |f5/f1| 0.11

In the photographing lens assembly according to the 4th embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 410 through the seventh lens element470 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

4th Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.29 |f/R3| + |f/R4| 3.55|f/R5| + |f/R6| 2.43 |f/R7| + |f/R8| 0.97 |f/R9| + |f/R10| 5.57|f/R11| + |f/R12| 1.04 |f/R13| + |f/R14| 5.29

Furthermore, in the photographing lens assembly according to the 4thembodiment, three lens elements of the first lens element 410, thesecond lens element 420, the third lens element 430, the fourth lenselement 440, the fifth lens element 450, the sixth lens element 460, andthe seventh lens element 470 have the Abbe numbers less than 25.0, whichare the second lens element 420, the fourth lens element 440 and thesixth lens element 460.

In the photographing lens assembly according to the 4th embodiment, whena maximum optical effective radius of the object-side surface 411 of thefirst lens element 410 is Y11, a maximum optical effective radius of theobject-side surface 421 of the second lens element 420 is Y21, a maximumoptical effective radius of the object-side surface 431 of the thirdlens element 430 is Y31, a maximum optical effective radius of theobject-side surface 441 of the fourth lens element 440 is Y41, and amaximum optical effective radius of the object-side surface 451 of thefifth lens element 450 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

5th Embodiment

FIG. 9 is a schematic view of an imaging apparatus according to the 5thembodiment of the present disclosure. FIG. 10 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 5th embodiment. In FIG. 9, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 595. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 510, a second lens element 520, an aperture stop 500, a thirdlens element 530, a fourth lens element 540, a fifth lens element 550, asixth lens element 560, a seventh lens element 570, a filter 580 and animage surface 590. The image sensor 595 is disposed on the image surface590 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (510, 520, 530, 540, 550, 560 and 570)without additional one or more lens elements inserted between the firstlens element 510 and the seventh lens element 570, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (510-570).

The first lens element 510 with positive refractive power has anobject-side surface 511 being convex in a paraxial region thereof and animage-side surface 512 being convex in a paraxial region thereof. Thefirst lens element 510 is made of a plastic material, and has theobject-side surface 511 and the image-side surface 512 being bothaspheric. Furthermore, each of the object-side surface 511 and theimage-side surface 512 of the first lens element 510 includes at leastone inflection point.

The second lens element 520 with negative refractive power has anobject-side surface 521 being convex in a paraxial region thereof and animage-side surface 522 being concave in a paraxial region thereof. Thesecond lens element 520 is made of a plastic material, and has theobject-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with positive refractive power has anobject-side surface 531 being convex in a paraxial region thereof and animage-side surface 532 being convex in a paraxial region thereof. Thethird lens element 530 is made of a glass material, and has theobject-side surface 531 and the image-side surface 532 being bothaspheric.

The fourth lens element 540 with negative refractive power has anobject-side surface 541 being concave in a paraxial region thereof andan image-side surface 542 being concave in a paraxial region thereof.The fourth lens element 540 is made of a plastic material, and has theobject-side surface 541 and the image-side surface 542 being bothaspheric.

The fifth lens element 550 with positive refractive power has anobject-side surface 551 being concave in a paraxial region thereof andan image-side surface 552 being convex in a paraxial region thereof. Thefifth lens element 550 is made of a plastic material, and has theobject-side surface 551 and the image-side surface 552 being bothaspheric. Furthermore, each of the object-side surface 551 and theimage-side surface 552 of the fifth lens element 550 includes at leastone inflection point.

The sixth lens element 560 with positive refractive power has anobject-side surface 561 being concave in a paraxial region thereof andan image-side surface 562 being convex in a paraxial region thereof. Thesixth lens element 560 is made of a plastic material, and has theobject-side surface 561 and the image-side surface 562 being bothaspheric. Furthermore, each of the object-side surface 561 and theimage-side surface 562 of the sixth lens element 560 includes at leastone inflection point, and the image-side surface 562 of the sixth lenselement 560 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 570 with negative refractive power has anobject-side surface 571 being convex in a paraxial region thereof and animage-side surface 572 being concave in a paraxial region thereof. Theseventh lens element 570 is made of a plastic material, and has theobject-side surface 571 and the image-side surface 572 being bothaspheric. Furthermore, each of the object-side surface 571 and theimage-side surface 572 of the seventh lens element 570 includes at leastone inflection point, and the image-side surface 572 of the seventh lenselement 570 includes at least one convex shape in an off-axis regionthereof.

The filter 580 is made of a glass material and located between theseventh lens element 570 and the image surface 590, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 3.15 mm, Fno = 1.87, HFOV = 48.4 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Lens 1 23.464 ASP 0.622 Plastic 1.534 55.9 16.97 2−14.627 ASP 0.066 3 Lens 2 1.834 ASP 0,299 Plastic 1.669 19.5 −166.48 41.686 ASP 0.235 5 Ape. Stop Plano 0.061 6 Lens 3 47.280 ASP 0.820 Glass1.583 46.5 2.41 7 −1.436 ASP 0.030 8 Lens 4 −4.993 ASP 0.284 Plastic1.660 20.4 −4.99 9 9.867 ASP 0.435 10 Lens 5 −1.804 ASP 0.715 Plastic1.544 56.0 2.49 11 −0.882 ASP 0.030 12 Lens 6 −4.250 ASP 0.506 Plastic1.544 56.0 55.44 13 −3.881 ASP 0.062 14 Lens 7 2.529 ASP 0.393 Plastic1.544 56.0 −2.47 15 0.829 ASP 0.650 16 Filter Plano 0.210 Glass 1.51764.2 — 17 Plano 0.388 18 Image Plano — Reference wavelength is 587.6 nm(d-line).

TABLE 10 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k =   2.0000E+01−3.8715E+01 −6.1214E+00 −4.7402E+00   2.0000E+01 −1.0873E+00 −2.8788E+01A4 =   3.4658E−02   1.1104E−02   1.2808E−03   9.9526E−03 −5.9971E−02−1.0054E−02 −7.4442E−02 A6 = −1.2964E−02 −4.2931E−03 −1.1387E−01−1.4542E−01 −5.5027E−02 −9.8991E−02 −2.7387E−02 A8 =   4.1290E−03  7.5626E−04   9.4609E−02   1.4462E−01 −2.3025E−02 −5.8742E−02  3.6825E−02 A10 = −9.8403E−04 −1.2754E−04 −2.3069E−02 −2.0996E−02−1.1837E−01   1.7798E−01   5.9613E−02 A12 =   1.0941E−04   1.1067E−05  2.5140E−03 −1.2254E−01 −7.1181E−02 A14 = −4.0772E−06   2.0199E−02Surface # 9 10 11 12 13 14 15 k = −3.2289E+01 −3.5060E+00 −4.1971E+00  1 .7579E+00 −3.8160E+01 −4.9908E+00 −3.7276E+00 A4 = −8.5400E−02−1.3677E−01 −2.6684E−01   1.6541E−01   1.2658E−01 −4.1395E−02−6.2549E−02 A6 =   7.0604E−02   1.3948E−01   3.5492E−01 −4.0074E−02−5.0105E−02 −1.1943E−02   2.2932E−02 A8 = −5.4676E−02 −1.0704E−01−3.4848E−01 −3.2035E−02   3.9126E−03   8.3007E−03 −7.7292E−03 A10 =  4.8414E−02   1.2260E−01   2.2794E−01   2.8225E−02   1.9750E−03−1.5370E−03   1.7360E−03 A12 = −2.2076E−02 −7.4619E−02 −8.1839E−02−1.0108E−02 −6.8249E−04   1.0319E−04 −2.1674E−04 A14 =   3.6557E−03  2.0821E−02   1.4979E−02   1.7550E−03   8.5882E−05   3.2556E−07  1.3634E−05 A16 = −2.2032E−03 −1.1161E−03 −1.1887E−04 −3.9363E−06−2.1165E−07 −3.3846E−07

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 3.15 |f/f1|+ |f/f2| 0.20 Fno. 1.87 |f/fi|min 0.02HFOV [deg.] 48.4 Y11/Y72 0.69 Nmax 1.669 TL/ImgH 1.57 CT4/CT5 0.40f/ImgH 0.85 (R1 + R2)/(R1 − R2) 0.23 f/EPD 1.87 (R5 + R6)/(R5 − R6) 0.94SD/TD 0.73 (R7 + R8)/(R7 − R8) −0.33 Yc62/Yc72 0.28, 0.64 f/f1 0.19|SAGc62/Yc62| 0.038, 0.037 f/f12 0.18 |Dsr4/Dsr3| 0.44 |f3/f1| 0.14|Dsr5/Dsr6| 0.07 |f5/f1| 0.15

In the photographing lens assembly according to the 5th embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 510 through the seventh lens element570 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

5th Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.35 |f/R3| + |f/R4| 3.59|f/R5| + |f/R6| 2.26 |f/R7| + |f/R8| 0.95 |f/R9| + |f/R10| 5.32|f/R11| + |f/R12| 1.55 |f/R13| + |f/R14| 5.05

Furthermore, in the photographing lens assembly according to the 5thembodiment, two lens elements of the first lens element 510, the secondlens element 520, the third lens element 530, the fourth lens element540, the fifth lens element 550, the sixth lens element 560, and theseventh lens element 570 have the Abbe numbers less than 25.0, which arethe second lens element 520 and the fourth lens element 540.

In the photographing lens assembly according to the 5th embodiment, whena maximum optical effective radius of the object-side surface 511 of thefirst lens element 510 is Y11, a maximum optical effective radius of theobject-side surface 521 of the second lens element 520 is Y21, a maximumoptical effective radius of the object-side surface 531 of the thirdlens element 530 is Y31, a maximum optical effective radius of theobject-side surface 541 of the fourth lens element 540 is Y41, and amaximum optical effective radius of the object-side surface 551 of thefifth lens element 550 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

6th Embodiment

FIG. 11 is a schematic view of an imaging apparatus according to the 6thembodiment of the present disclosure. FIG. 12 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 6th embodiment. In FIG. 11, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 695. The photographing lens assemblyincludes, in order from an object side to an image side, a stop 601, afirst lens element 610, a second lens element 620, an aperture stop 600,a third lens element 630, a stop 602, a fourth lens element 640, a fifthlens element 650, a sixth lens element 660, a seventh lens element 670,a filter 680 and an image surface 690. The image sensor 695 is disposedon the image surface 690 of the photographing lens assembly. Thephotographing lens assembly includes seven lens elements (610, 620, 630,640, 650, 660 and 670) without additional one or more lens elementsinserted between the first lens element 610 and the seventh lens element670, and there is an air gap in a paraxial region between each ofadjacent lens elements of the seven lens elements (610-670).

The first lens element 610 with positive refractive power has anobject-side surface 611 being concave in a paraxial region thereof andan image-side surface 612 being convex in a paraxial region thereof. Thefirst lens element 610 is made of a plastic material, and has theobject-side surface 611 and the image-side surface 612 being bothaspheric. Furthermore, each of the object-side surface 611 and theimage-side surface 612 of the first lens element 610 includes at leastone inflection point.

The second lens element 620 with negative refractive power has anobject-side surface 621 being convex in a paraxial region thereof and animage-side surface 622 being concave in a paraxial region thereof. Thesecond lens element 620 is made of a plastic material, and has theobject-side surface 621 and the image-side surface 622 being bothaspheric.

The third lens element 630 with positive refractive power has anobject-side surface 631 being convex in a paraxial region thereof and animage-side surface 632 being convex in a paraxial region thereof. Thethird lens element 630 is made of a plastic material, and has theobject-side surface 631 and the image-side surface 632 being bothaspheric.

The fourth lens element 640 with negative refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being concave in a paraxial region thereof. Thefourth lens element 640 is made of a plastic material, and has theobject-side surface 641 and the image-side surface 642 being bothaspheric.

The fifth lens element 650 with positive refractive power has anobject-side surface 651 being concave in a paraxial region thereof andan image-side surface 652 being convex in a paraxial region thereof. Thefifth lens element 650 is made of a plastic material, and has theobject-side surface 651 and the image-side surface 652 being bothaspheric. Furthermore, each of the object-side surface 651 and theimage-side surface 652 of the fifth lens element 650 includes at leastone inflection point.

The sixth lens element 660 with negative refractive power has anobject-side surface 661 being concave in a paraxial region thereof andan image-side surface 662 being concave in a paraxial region thereof.The sixth lens element 660 is made of a plastic material, and has theobject-side surface 661 and the image-side surface 662 being bothaspheric. Furthermore, each of the object-side surface 661 and theimage-side surface 662 of the sixth lens element 660 includes at leastone inflection point, and the image-side surface 662 of the sixth lenselement 660 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 670 with negative refractive power has anobject-side surface 671 being convex in a paraxial region thereof and animage-side surface 672 being concave in a paraxial region thereof. Theseventh lens element 670 is made of a plastic material, and has theobject-side surface 671 and the image-side surface 672 being bothaspheric. Furthermore, each of the object-side surface 671 and theimage-side surface 672 of the seventh lens element 670 includes at leastone inflection point, and the image-side surface 672 of the seventh lenselement 670 includes at least one convex shape in an off-axis regionthereof.

The filter 680 is made of a glass material and located between theseventh lens element 670 and the image surface 690, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 3.39 mm, Fno = 1.89, HFOV = 48.3 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Stop Plano 0.000 2 Lens 1 −31.980 ASP 0.434Plastic 1.545 56.1 7.31 3 −3.560 ASP 0.030 4 Lens 2 1.915 ASP 0.260Plastic 1.669 19.3 −10.89 5 1.434 ASP 0.187 6 Ape. Stop Plano 0.151 7Lens 3 42.171 ASP 0.676 Plastic 1.544 56.0 3.12 8 −1.758 ASP 0.030 9Stop Plano 0.000 10 Lens 4 4.281 ASP 0.270 Plastic 1.638 22.1 −9.23 112.418 ASP 0.654 12 Lens 5 −1.881 ASP 0.639 Plastic 1.545 54.8 2.07 13−0.790 ASP 0.030 14 Lens 6 −3.994 ASP 0.300 Plastic 1.571 34.8 −3.41 '153.907 ASP 0.045 16 Lens 7 1.574 ASP 0.433 Plastic 1.544 56.0 −5.37 170.924 ASP 0.800 18 Filter Plano 0.210 Glass 1.517 64.2 — 19 Plano 0.24220 Image Plano — Reference wavelength is 587.6 nm (d-line). Effectiveradius of the stop on Surface 1 is 1.725 mm Effective radius of the stopon Surface 9 is 1.196 mm

TABLE 12 Aspheric Coefficients Surface # 2 3 4 5 7 8 10 k = −8.2238E+01−5.6605E+01 −6.3405E+00 −6.2823E+00 −4.3389E+01 −1.1668E+00 −2.6511E+00A4 =   4.5145E−02   2.5142E−02 −1.9672E−02 −3.8936E−02 −3.9856E−02−6.7013E−02 −1.5076E−01 A6 = −2.7921E−02 −2.7885E−02 −6.4505E−02  2.0151E−02 −3.3505E−02   7.1709E−02   2.1442E−01 A8 =   1.2372E−02  1.8121E−02 −4.5543E−03 −1.3232E−01 −8.2229E−02 −2.2440E−01 −3.3359E−01A10 = −3.5266E−03 −7.3154E−03   4.8922E−02   1.2751E−01   3.4005E−02  2.0752E−01   3.1774E−01 A12 =   2.6337E−04   1.2516E−03 −1.8730E−02−8.2979E−02 −1.4461E−01 A14 =   5.1584E−05   2.4895E−02 Surface # 11 1213 14 15 16 17 k = −9.2234E+00 −3.8100E+00 −3.6821E+00   3.1996E+00−9.7066E+01 −5.4552E+00 −4.7081E+00 A4 = −7.3757E−02 −1.5511E−01−1.7147E−01   3.4699E−01   1.3983E−01 −1.4166E−01 −9.6295E−02 A6 =  1.0751E−01   3.2693E−01   2.3230E−01 −4.0166E−01 −1.6718E−01  4.3114E−02   3.3851E−02 A8 = −1.3202E−01 −5.2864E−01 −3.0494E−01  2.5376E−01   8.2358E−02 −6.8280E−03 −7.0286E−03 A10 =   9.3848E−02  5.9945E−01   2.4931E−01 −1.0490E−01 −2.3995E−02   7.8915E−04  8.1785E−04 A12 = −3.0981E−02 −3.8512E−01 −9.9937E−02   2.8460E−02  4.1437E−03 −8.6856E−05 −4.6136E−05 A14 =   3.5273E−03   1.2908E−01  1.8683E−02 −4.8457E−03 −3.9084E−04   7.1953E−06   5.5161E−07 A16 =−1.7855E−02 −1.2962E−03   3.9675E−04   1.5562E−05 −2.6368E−07  3.1544E−08

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 3.39 |f/f1|+ |f/f2| 0.77 Fno. 1.89 |f/fi|min 0.31HFOV [deg.] 48.3 Y11/Y72 0.54 Nmax 1.669 TL/ImgH 1.42 CT4/CT5 0.42f/ImgH 0.89 (R1 + R2)/(R1 − R2) 1.25 f/EPD 1.89 (R5 + R6)/(R5 − R6) 0.92SD/TD 0.78 (R7 + R8)/(R7 − R8) 3.50 Yc62/Yc72 0.75 f/f1 0.46|SAGc62/Yc62| 0.097 f/f12 0.19 |Dsr4/Dsr3| 0.42 |f3/f1| 0.43 |Dsr5/Dsr6|0.18 |f5/f1| 0.28

In the photographing lens assembly according to the 6th embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 610 through the seventh lens element670 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

6th Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 1.06 |f/R3| + |f/R4| 4.13|f/R5| + |f/R6| 2.01 |f/R7| + |f/R8| 2.19 |f/R9| + |f/R10| 6.09|f/R11| + |f/R12| 1.71 |f/R13| + |f/R14| 5.82

Furthermore, in the photographing lens assembly according to the 6thembodiment, two lens elements of the first lens element 610, the secondlens element 620, the third lens element 630, the fourth lens element640, the fifth lens element 650, the sixth lens element 660, and theseventh lens element 670 have the Abbe numbers less than 25.0, which arethe second lens element 620 and the fourth lens element 640.

In the photographing lens assembly according to the 6th embodiment, whena maximum optical effective radius of the object-side surface 611 of thefirst lens element 610 is Y11, a maximum optical effective radius of theobject-side surface 621 of the second lens element 620 is Y21, a maximumoptical effective radius of the object-side surface 631 of the thirdlens element 630 is Y31, a maximum optical effective radius of theobject-side surface 641 of the fourth lens element 640 is Y41, and amaximum optical effective radius of the object-side surface 651 of thefifth lens element 650 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

7th Embodiment

FIG. 13 is a schematic view of an imaging apparatus according to the 7thembodiment of the present disclosure. FIG. 14 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 7th embodiment. In FIG. 13, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 795. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 710, a second lens element 720, an aperture stop 700, a thirdlens element 730, a fourth lens element 740, a fifth lens element 750, asixth lens element 760, a seventh lens element 770, a filter 780 and animage surface 790. The image sensor 795 is disposed on the image surface790 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (710, 720, 730, 740, 750, 760 and 770)without additional one or more lens elements inserted between the firstlens element 710 and the seventh lens element 770, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (710-770).

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex in a paraxial region thereof and animage-side surface 712 being convex in a paraxial region thereof. Thefirst lens element 710 is made of a plastic material, and has theobject-side surface 711 and the image-side surface 712 being bothaspheric. Furthermore, the object-side surface 711 of the first lenselement 710 includes at least one inflection point.

The second lens element 720 with positive refractive power has anobject-side surface 721 being convex in a paraxial region thereof and animage-side surface 722 being concave in a paraxial region thereof. Thesecond lens element 720 is made of a plastic material, and has theobject-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex in a paraxial region thereof and animage-side surface 732 being convex in a paraxial region thereof. Thethird lens element 730 is made of a plastic material, and has theobject-side surface 731 and the image-side surface 732 being bothaspheric.

The fourth lens element 740 with negative refractive power has anobject-side surface 741 being concave in a paraxial region thereof andan image-side surface 742 being convex in a paraxial region thereof. Thefourth lens element 740 is made of a plastic material, and has theobject-side surface 741 and the image-side surface 742 being bothaspheric.

The fifth lens element 750 with positive refractive power has anobject-side surface 751 being concave in a paraxial region thereof andan image-side surface 752 being convex in a paraxial region thereof. Thefifth lens element 750 is made of a plastic material, and has theobject-side surface 751 and the image-side surface 752 being bothaspheric. Furthermore, each of the object-side surface 751 and theimage-side surface 752 of the fifth lens element 750 includes at leastone inflection point.

The sixth lens element 760 with negative refractive power has anobject-side surface 761 being concave in a paraxial region thereof andan image-side surface 762 being convex in a paraxial region thereof. Thesixth lens element 760 is made of a plastic material, and has theobject-side surface 761 and the image-side surface 762 being bothaspheric. Furthermore, each of the object-side surface 761 and theimage-side surface 762 of the sixth lens element 760 includes at leastone inflection point, and the image-side surface 762 of the sixth lenselement 760 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 770 with negative refractive power has anobject-side surface 771 being convex in a paraxial region thereof and animage-side surface 772 being concave in a paraxial region thereof. Theseventh lens element 770 is made of a plastic material, and has theobject-side surface 771 and the image-side surface 772 being bothaspheric. Furthermore, each of the object-side surface 771 and theimage-side surface 772 of the seventh lens element 770 includes at leastone inflection point, and the image-side surface 772 of the seventh lenselement 770 includes at least one convex shape in an off-axis regionthereof.

The filter 780 is made of a glass material and located between theseventh lens element 770 and the image surface 790, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f= 3.13 mm, Fno = 1.91, HFOV = 46.4 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Lens 1 26.695 ASP 0.681 Plastic 1.534 55.913.42 2 −9.710 ASP 0.030 3 Lens 2 1.854 ASP 0.305 Plastic 1.669 19.5772.89 4 1.738 ASP 0.228 5 Ape. Stop Plano 0.092 6 Lens 3 11.340 ASP0.890 Plastic 1.582 30.2 2.06 7 −1.306 ASP 0.030 8 Lens 4 −1.702 ASP0.220 Plastic 1.660 20.4 −2.65 9 −68.822 ASP 0.299 10 Lens 5 −2.244 ASP0.706 Plastic 1.544 56.0 2.29 11 −0.890 ASP 0.032 12 Lens 6 −4.588 ASP0.508 Plastic 1.544 56.0 −10.86 13 −21.296 ASP 0.124 14 Lens 7 1.623 ASP0.427 Plastic 1.544 56.0 −4.14 15 0.856 ASP 0.740 16 Filter Plano 0.210Glass 1.517 64.2 — 17 Plano 0.381 18 Image Plano — Reference wavelengthis 587.6 nm (d-line).

TABLE 14 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k =   3.7173E+00−3.8715E+01 −6.2037E+00 −5.3442E+00   2.0000E+01 −1.0882E+00 −3.9733E+00A4 =   3.2731E−02   7.5033E−03 −2.3537E−03   1.0547E−02 −3.8919E−02−3.4345E−02 −2.4672E−01 A6 = −1.3188E−02 −2.2521E−03 −1.0357E−01−2.0724E−01 −3.2738E−02   3.9560E−02   4.8640E−01 A8 =   3.4881E−03  2.9449E−04   9.8993E−02   2.8294E−01   1.1923E−02 −3.2879E−01−1.0819E+00 A10 = −6.2316E−04 −4.2441E−05 −2.8795E−02 −1.3627E−01−1.8543E−01   4.0180E−01   1.3274E+00 A12 =   5.7419E−05   3.6571E−06−2.9515E−04 −1.9426E−01 −7.8398E−01 A14 = −1.9509E−06   1.8077E−01Surface # 9 10 11 12 13 14 15 k = −1.0000E+00 −4.1271E+00 −3.9923E+00  1.7435E−01   1.6605E+01 −4.9173E+00 −3.4395E+00 A4 = −1.1801E−01−1.2797E−01 −2.6488E−01   2.1734E−01   1.1962E−01 −2.9804E−02−4.3790E−02 A6 =   2.0387E−01   1.1033E−01   3.2367E−01 −1.4012E−01−7.6102E−02 −1.2877E−02   9.8759E−03 A8 = −2.1883E−01 −5.5812E−03−3.2348E−01   5.3172E−02   2.8350E−02   7.1227E−03 −2,3817E−03 A10 =  1.5100E−01 −4.5650E−03   2.1359E−01 −1.2633E−02 −7.5408E−03−1.2788E−03   5.0315E−04 A12 = −5.5408E−02 −3.8291E−03 −7.2883E−02  1.5822E−03   1.3171E−03   1.0412E−04 −6.1360E−05 A14 =   8.0892E−03  2.3725E−03   1.1975E−02 −7.0172E−05 −1.3458E−04 −3.4842E−06  3.6980E−06 A16 = −3.5038E−04 −7.5939E−04 −1.1805E−06   5.9913E−06  2.1827E−08 −8.6494E−08

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 3.13 |f/f1|+ |f/f2| 0.24 Fno. 1.91 |f/fi|min 0.004HFOV [deg.] 46.4 Y11/Y72 0.69 Nmax 1.669 TL/ImgH 1.72 CT4/CT5 0.31f/ImgH 0.91 (R1 + R2)/(R1 − R2) 0.47 f/EPD 1.91 (R5 + R6)/(R5 − R6) 0.79SD/TD 0.73 (R7 + R8)/(R7 − R8) −1.05 Yc62/Yc72 0.11, 0.58 f/f1 0.23|SAGc62/Yc62| 0.004, 0.072 f/f12 0.25 |Dsr4/Dsr3| 0.43 |f3/f1| 0.15|Dsr5/Dsr6| 0.09 |f5/f1| 0.17

In the photographing lens assembly according to the 7th embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 710 through the seventh lens element770 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

7th Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.44 |f/R3| + |f/R4| 3.49|f/R5| + |f/R6| 2.68 |f/R7| + |f/R8| 1.89 |f/R9| + |f/R10| 4.92|f/R11| + |f/R12| 0.83 |f/R13| + |f/R14| 5.59

Furthermore, in the photographing lens assembly according to the 7thembodiment, two lens elements of the first lens element 710, the secondlens element 720, the third lens element 730, the fourth lens element740, the fifth lens element 750, the sixth lens element 760, and theseventh lens element 770 have the Abbe numbers less than 25.0, which arethe second lens element 720 and the fourth lens element 740.

In the photographing lens assembly according to the 7th embodiment, whena maximum optical effective radius of the object-side surface 711 of thefirst lens element 710 is Y11, a maximum optical effective radius of theobject-side surface 721 of the second lens element 720 is Y21, a maximumoptical effective radius of the object-side surface 731 of the thirdlens element 730 is Y31, a maximum optical effective radius of theobject-side surface 741 of the fourth lens element 740 is Y41, and amaximum optical effective radius of the object-side surface 751 of thefifth lens element 750 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

8th Embodiment

FIG. 15 is a schematic view of an imaging apparatus according to the 8thembodiment of the present disclosure. FIG. 16 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 8th embodiment. In FIG. 15, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 895. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 810; a second lens element 820, an aperture stop 800, a thirdlens element 830, a fourth lens element 840, a fifth lens element 850, asixth lens element 860, a seventh lens element 870, a filter 880 and animage surface 890. The image sensor 895 is disposed on the image surface890 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (810, 820, 830, 840, 850, 860 and 870)without additional one or more lens elements inserted between the firstlens element 810 and the seventh lens element 870, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (810-870).

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex in a paraxial region thereof and animage-side surface 812 being convex in a paraxial region thereof. Thefirst lens element 810 is made of a plastic material, and has theobject-side surface 811 and the image-side surface 812 being bothaspheric. Furthermore, the object-side surface 811 of the first lenselement 810 includes at least one inflection point.

The second lens element 820 with negative refractive power has anobject-side surface 821 being convex in a paraxial region thereof and animage-side surface 822 being concave in a paraxial region thereof. Thesecond lens element 820 is made of a plastic material, and has theobject-side surface 821 and the image-side surface 822 being bothaspheric.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex in a paraxial region thereof and animage-side surface 832 being convex in a paraxial region thereof. Thethird lens element 830 is made of a plastic material, and has theobject-side surface 831 and the image-side surface 832 being bothaspheric.

The fourth lens element 840 with negative refractive power has anobject-side surface 841 being concave in a paraxial region thereof andan image-side surface 842 being convex in a paraxial region thereof. Thefourth lens element 840 is made of a plastic material, and has theobject-side surface 841 and the image-side surface 842 being bothaspheric.

The fifth lens element 850 with positive refractive power has anobject-side surface 851 being concave in a paraxial region thereof andan image-side surface 852 being convex in a paraxial region thereof. Thefifth lens element 850 is made of a plastic material, and has theobject-side surface 851 and the image-side surface 852 being bothaspheric. Furthermore, each of the object-side surface 851 and theimage-side surface 852 of the fifth lens element 850 includes at leastone inflection point.

The sixth lens element 860 with negative refractive power has anobject-side surface 861 being convex in a paraxial region thereof and animage-side surface 862 being concave in a paraxial region thereof. Thesixth lens element 860 is made of a plastic material, and has theobject-side surface 861 and the image-side surface 862 being bothaspheric. Furthermore, each of the object-side surface 861 and theimage-side surface 862 of the sixth lens element 860 includes at leastone inflection point, and the image-side surface 862 of the sixth lenselement 860 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 870 with negative refractive power has anobject-side surface 871 being convex in a paraxial region thereof and animage-side surface 872 being concave in a paraxial region thereof. Theseventh lens element 870 is made of a plastic material, and has theobject-side surface 871 and the image-side surface 872 being bothaspheric. Furthermore, each of the object-side surface 871 and theimage-side surface 872 of the seventh lens element 870 includes at leastone inflection point, and the image-side surface 872 of the seventh lenselement 870 includes at least one convex shape in an off-axis regionthereof.

The filter 880 is made of a glass material and located between theseventh lens element 870 and the image surface 890, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f= 3.09 mm, Fno = 1.95, HFOV = 46.9 deg. SurfaceFocal # Curvature Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Lens 1 18.408 ASP 0.674 Plastic 1.535 56.3 12.46 2−10.310 ASP 0.036 3 Lens 2 1.960 ASP 0.315 Plastic 1.656 21.3 −106.11 41.785 ASP 0.134 5 Ape. Stop Plano 0.114 6 Lens 3 10.471 ASP 0.931Plastic 1.582 30.2 2.14 7 −1.365 ASP 0.030 8 Lens 4 −1.629 ASP 0.223Plastic 1.669 19.5 −2.62 9 −24.585 ASP 0.190 10 Lens 5 −2.804 ASP 0.735Plastic 1.511 56.8 2.75 11 −1.020 ASP 0.045 12 Lens 6 20.784 ASP 0.421Plastic 1.511 56.8 −9.45 13 3.892 ASP 0.379 14 Lens 7 1.134 ASP 0.352Plastic 1.534 55.9 −7.34 15 0.785 ASP 0.800 16 Filter Plano 0.210 Glass1.517 64.2 — 17 Plano 0.192 18 Image Plano — Reference wavelength is587.6 nm (d-line).

TABLE 16 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k = −1.4890E+01−3.8157E+01 −6.6435E+00 −5.3729E+00   9.9547E+00 −1.0876E+00 −3.8103E+00A4 = 2.7765E−02   1.0588E−02 −7.1071E−03   1.3260E−02 −3.0195E−02−1.9694E−01 −4.2762E−01 A6 = −1.0940E−02 −3.6038E−03 −3.4002E−02−1.6591E−01 −6.6078E−03   8.1710E−01   1.2764E+00 A8 =   3.0290E−03  5.7618E−04 −2.2653E−02   2.3576E−01 −4.0512E−02 −1.5870E+00−2.2493E+00 A10 = −6.0027E−04 −6.4619E−05   7.2486E−02 −1.6738E−01−1.6326E−01   1.2108E+00   1.8818E+00 A12 =   6.3163E−05   4.3471E−06−3.7378E−02 −3.5901E−01 −7.0557E−01 A14 = −2.4849E−06   9.4975E−02Surface # 9 10 11 12 13 14 15 k = −1.0000E+00 −5.1583E+00 −4.8583E+00−2.7944E+01 −1.0000E+00 −4.0345E+00 −2.8100E+00 A4 = −1.6117E−01−1.5120E−01 −3.1284E−01   1.7936E−01   9.1615E−02 −2.7332E−02−5.2791E−02 A6 =   3.1187E−01   1.9632E−01   4.2083E−01 −1.2747E−01−6.4614E−02 −6.6064E−03   1.6333E−02 A8 = −3.4555E−01 −1.0990E−01−4.2055E−01   4.7984E−02   2.1014E−02   2.7669E−03 −4.6149E−03 A10 =  2.3009E−01   6.6267E−02   2.7002E−01 −1.1089E−02 −4.0920E−03−1.9057E−04   8.4059E−04 A12 = −8.0786E−02 −3.2898E−02 −9.1999E−02  1.5085E−03   4.8230E−04 −2.1495E−05 −8.6009E−05 A14 =   1.1501E−02  8.9963E−03   1.5416E−02 −1.0901E−04 −3.2116E−05   3.2071E−06  4.5503E−06 A16 = −9.8960E−04 −1.0136E−03   3.1785E−06   9.2259E−07−1.0823E−07 −9.7235E−08

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 3.09 |f/f1|+ |f/f2| 0.28 Fno. 1.95 |f/fi|min 0.03HFOV [deg.] 46.9 Y11/Y72 0.60 Nmax 1.669 TL/ImgH 1.69 CT4/CT5 0.30f/ImgH 0.90 (R1 + R2)/(R1 − R2) 0.28 f/EPD 1.95 (R5 + R6)/(R5 − R6) 0.77SD/TD 0.75 (R7 + R8)/(R7 − R8) −1.14 Yc62/Yc72 1.04 f/f1 0.25|SAGc62/Yc62| 0.254 f/f12 0.24 |Dsr4/Dsr3| 0.30 |f3/f1| 0.17 |Dsr5/Dsr6|0.11 |f5/f1| 0.22

In the photographing lens assembly according to the 8th embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 810 through the seventh lens element870 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

8th Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.47 |f/R3| + |f/R4| 3.30|f/R5| + |f/R6| 2.55 |f/R7| + |f/R8| 2.02 |f/R9| + |f/R10| 4.13|f/R11| + |f/R12| 0.94 |f/R13| + |f/R14| 6.65

Furthermore, in the photographing lens assembly according to the 8thembodiment, two lens elements of the first lens element 810, the secondlens element 820, the third lens element 830, the fourth lens element840, the fifth lens element 850, the sixth lens element 860, and theseventh lens element 870 have the Abbe numbers less than 25.0, which arethe second lens element 820 and the fourth lens element 840.

In the photographing lens assembly according to the 8th embodiment, whena maximum optical effective radius of the object-side surface 811 of thefirst lens element 810 is Y11, a maximum optical effective radius of theobject-side surface 821 of the second lens element 820 is Y21, a maximumoptical effective radius of the object-side surface 831 of the thirdlens element 830 is Y31, a maximum optical effective radius of theobject-side surface 841 of the fourth lens element 840 is Y41, and amaximum optical effective radius of the object-side surface 851 of thefifth lens element 850 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

9th Embodiment

FIG. 17 is a schematic view of an imaging apparatus according to the 9thembodiment of the present disclosure. FIG. 18 shows spherical aberrationcurves, astigmatic field curves and a distortion curve of the imagingapparatus according to the 9th embodiment. In FIG. 17, the imagingapparatus includes a photographing lens assembly (its reference numeralis omitted) and an image sensor 995. The photographing lens assemblyincludes, in order from an object side to an image side, a first lenselement 910, a second lens element 920, an aperture stop 900, a thirdlens element 930, a fourth lens element 940, a fifth lens element 950, asixth lens element 960, a seventh lens element 970, a filter 980 and animage surface 990. The image sensor 995 is disposed on the image surface990 of the photographing lens assembly. The photographing lens assemblyincludes seven lens elements (910, 920, 930, 940, 950, 960 and 970)without additional one or more lens elements inserted between the firstlens element 910 and the seventh lens element 970, and there is an airgap in a paraxial region between each of adjacent lens elements of theseven lens elements (910-970).

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex in a paraxial region thereof and animage-side surface 912 being concave in a paraxial region thereof. Thefirst lens element 910 is made of a plastic material, and has theobject-side surface 911 and the image-side surface 912 being bothaspheric. Furthermore, each of the object-side surface 911 and theimage-side surface 912 of the first lens element 910 includes at leastone inflection point.

The second lens element 920 with negative refractive power has anobject-side surface 921 being convex in a paraxial region thereof and animage-side surface 922 being concave in a paraxial region thereof. Thesecond lens element 920 is made of a plastic material, and has theobject-side surface 921 and the image-side surface 922 being bothaspheric.

The third lens element 930 with positive refractive power has anobject-side surface 931 being concave in a paraxial region thereof andan image-side surface 932 being convex in a paraxial region thereof. Thethird lens element 930 is made of a plastic material, and has theobject-side surface 931 and the image-side surface 932 being bothaspheric.

The fourth lens element 940 with negative refractive power has anobject-side surface 941 being convex in a paraxial region thereof and animage-side surface 942 being concave in a paraxial region thereof. Thefourth lens element 940 is made of a plastic material, and has theobject-side surface 941 and the image-side surface 942 being bothaspheric.

The fifth lens element 950 with positive refractive power has anobject-side surface 951 being concave in a paraxial region thereof andan image-side surface 952 being convex in a paraxial region thereof. Thefifth lens element 950 is made of a plastic material, and has theobject-side surface 951 and the image-side surface 952 being bothaspheric. Furthermore, each of the object-side surface 951 and theimage-side surface 952 of the fifth lens element 950 includes at leastone inflection point.

The sixth lens element 960 with negative refractive power has anobject-side surface 961 being concave in a paraxial region thereof andan image-side surface 962 being concave in a paraxial region thereof.The sixth lens element 960 is made of a plastic material, and has theobject-side surface 961 and the image-side surface 962 being bothaspheric. Furthermore, each of the object-side surface 961 and theimage-side surface 962 of the sixth lens element 960 includes at leastone inflection point, and the image-side surface 962 of the sixth lenselement 960 includes at least one convex shape in an off-axis regionthereof.

The seventh lens element 970 with negative refractive power has anobject-side surface 971 being convex in a paraxial region thereof and animage-side surface 972 being concave in a paraxial region thereof. Theseventh lens element 970 is made of a plastic material, and has theobject-side surface 971 and the image-side surface 972 being bothaspheric. Furthermore, each of the object-side surface 971 and theimage-side surface 972 of the seventh lens element 970 includes at leastone inflection point, and the image-side surface 972 of the seventh lenselement 970 includes at least one convex shape in an off-axis regionthereof.

The filter 980 is made of a glass material and located between theseventh lens element 970 and the image surface 990, and will not affectthe focal length of the photographing lens assembly.

The detailed optical data of the 9th embodiment are shown in Table 17and the aspheric surface data are shown in Table 18 below.

TABLE 17 9th Embodiment f= 3.12 mm, Fno = 2.17, HFOV = 45.9 deg. SurfaceFocal # Curvature Radius Thickness Material Index Abbe # Length  0Object Plano Infinity  1 Lens 1 9.940 ASP 0.570 Plastic 1.534 55.9 18.62 2 196198.126 ASP 0.260  3 Lens 2 1.908 ASP 0.235 Plastic 1.669 19.5−31.66  4 1.664 ASP 0.202  5 Ape. Stop Plano 0.044  6 Lens 3 −24.308 ASP0.783 Plastic 1.544 56.0 2.63  7 −1.368 ASP 0.033  8 Lens 4 4.338 ASP0.298 Plastic 1.660 20.4 −8.03  9 2.320 ASP 0.586 10 Lens 5 −2.077 ASP0.747 Plastic 1.544 56.0 2.33 11 −0.886 ASP 0.030 12 Lens 6 −5.697 ASP0.415 Plastic 1.582 30.2 −9.72 13 925.455 ASP 0.099 14 Lens 7 2.327 ASP0.402 Plastic 1.535 56.3 −2.79 15 0.854 ASP 0.550 16 Filter Plano 0.210Glass 1.517 64.2 — 17 Plano 0.242 18 Image Plano — Reference wavelengthis 587.6 nm (d-line).

TABLE 18 Aspheric Coefficients Surface # 1 2 3 4 6 7 8 k = −1.6969E+01  1.9966E+01 −7.1580E+00 −4.9182E+00 −9.8569E+01 −8.1803E−01 −2.4926E+00A4 =   2.7193E−02   1.5003E−02 −2.2390E−02 −1.3514E−02 −6.9936E−02−5.8009E−02 −1.3263E−01 A6 = −5.6057E−03 −8.4630E−03 −1.3238E−01−1.2278E−01 −9.3070E−02   4.3729E−02   1.7276E−01 A8 =   1.0661E−03  1.9098E−03   7.5399E−02   8.7679E−02 −1.5487E−02 −2.7181E−01−2.3480E−01 A10 = −1.1555E−04 −3.2022E−04   5.9118E−02   1.0898E−01−1.2516E−01   3.2952E−01   2.0885E−01 A12 = −6.3321E−05   2.7035E−05−3.2411E−02 −2.0345E−01 −1.0080E−01 A14 =   1.0697E−05   1.9903E−02Surface # 9 10 11 12 13 14 15 k = −9.7020E+00 −3.1749E+00 −3.4722E+00  4.1183E+00 −9.7199E+01 −4.3875E+00 −4.0393E+00 A4 = −6.5712E−02−8.9809E−02 −2.1553E−01   9.5993E−02   1.4670E+01 −7.5928E−02−7.6894E−02 A6 =   9.1371E−02   7.0873E−03   2.2741E−01   5.0757E−03−1.0623E−01   2.2696E−02   3.3865E−02 A8 = −9.3258E−02   1.0607E−01−1.7427E−01 −6.1478E−02   3.8692E−02 −1.0933E−02 −1.2281E−02 A10 =  5.8810E−02 −8.3344E−02   8.5816E−02   4.2867E−02 −8.8017E−03  4.0576E−03   2.7665E−03 A12 = −1.9458E−02   3.4572E−02 −1.2529E−02−1.4393E−02   1.1833E−03 −7.8123E−04 −3.4995E−04 A14 =   2.6783E−03−8.6613E−03 −3.3488E−03   2.4433E−03 −8.2591E−05   7.3147E−05  2.2962E−05 A16 =   9.9733E−04   8.6784E−04 −1.6743E−04   2.0661E−06−2.6703E−06 −6.1305E−07

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9th Embodiment f [mm] 3.12 |f/f1|+ |f/f2| 0.27 Fno. 2.17 |f/fi|min 0.10HFOV [deg.] 45.9 Y11/Y72 0.66 Nmax 1.669 TL/ImgH 1.73 CT4/CT5 0.40f/ImgH 0.94 (R1 + R2)/(R1 − R2) −1.00 f/EPD 2.17 (R5 + R6)/(R5 − R6)1.12 SD/TD 0.73 (R7 + R8)/(R7 − R8) 3.30 Yc62/Yc72 0.91 f/f1 0.17|SAGc62/Yc62| 0.095 f/f12 0.08 |Dsr4/Dsr3| 0.46 |f3/f1| 0.14 |Dsr5/Dsr6|0.05 |f5/f1| 0.12

In the photographing lens assembly according to the 9th embodiment, whenthe focal length of the photographing lens assembly is f, a curvatureradius of an object-side surface of one of the lens elements of thephotographing lens assembly is Rf, and a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, the value of the condition |f/Rf|+|f/Rr| correspondingto each of the first lens element 910 through the seventh lens element970 is listed in the following table, wherein term definitions of theparameters related to each surface of the lens elements are the same asthose of the 1st embodiment. Therefore, an explanation in this regardwill not be provided again.

9th Embodiment |f/Rf| + |f/Rr| |f/R1| + |f/R2| 0.31 |f/R3| + |f/R4| 3.51|f/R5| + |f/R6| 2.41 |f/R7| + |f/R8| 2.06 |f/R9| + |f/R10| 5.02|f/R11| + |f/R12| 0.55 |f/R13| + |f/R14| 4.99

Furthermore, in the photographing lens assembly according to the 9thembodiment, two lens elements of the first lens element 910, the secondlens element 920, the third lens element 930, the fourth lens element940, the fifth lens element 950, the sixth lens element 960, and theseventh lens element 970 have the Abbe numbers less than 25.0, which arethe second lens element 920 and the fourth lens element 940.

In the photographing lens assembly according to the 9th embodiment, whena maximum optical effective radius of the object-side surface 911 of thefirst lens element 910 is Y11, a maximum optical effective radius of theobject-side surface 921 of the second lens element 920 is Y21, a maximumoptical effective radius of the object-side surface 931 of the thirdlens element 930 is Y31, a maximum optical effective radius of theobject-side surface 941 of the fourth lens element 940 is Y41, and amaximum optical effective radius of the object-side surface 951 of thefifth lens element 950 is Y51, the following conditions are satisfied:Y11>Y21; Y11>Y31; Y11>Y41; and Y11>Y51.

10th Embodiment

FIG. 23 is a three-dimensional view of an imaging apparatus 10 accordingto the 10th embodiment of the present disclosure. In FIG. 23, theimaging apparatus 10 according to the 10th embodiment is a cameramodule. The imaging apparatus 10 includes an imaging lens module 11, adriving apparatus 12 and an image sensor 13, wherein the imaging lensmodule 11 includes the photographing lens assembly according to the 1stembodiment and a barrel (its reference numeral is omitted) for carryingthe photographing lens assembly. An image of an imaged object can becaptured by the imaging apparatus 10 via the imaging lens module 11, thedriving apparatus 12 is used to bring the image into focus so that theimage can be clearly formed on the image sensor 13, and then the imagedata is generated.

The driving apparatus 12 can have an auto-focus functionality, and adriving method thereof can use a voice coil motor (VCM), a microelectro-mechanical system (MEMS), a piezoelectric system or a shapememory alloy system. The driving apparatus 12 enables the photographinglens assembly to obtain a preferable imaging position, so that clearimages of the imaged object at different object distances can beobtained.

The image sensor 13 of the imaging apparatus 10 can have the propertiesof high photosensitivity and low noise (such as CMOS and CCD) and isdisposed on the image surface of the photographing lens assembly, sothat high image quality of the photographing lens assembly can beobtained.

Moreover, the imaging apparatus 10 can further include an imagestabilizing module 14. The image stabilizing module 14 can exemplarilyinclude an accelerator, a gyro sensor or a Hail Effect sensor. In the10th embodiment, the image stabilizing module 14 is a gyro sensor.However, it is only exemplary and the image stabilizing module 14 is notlimited thereto. By adjusting to movements in different axial directionsof the photographing lens assembly, the image blur due to motion duringexposure can be compensated, so that the image quality of dynamic orlow-light scenes can be enhanced. Moreover, advanced image compensationfunctions, such as optical image stabilization (OIS) or electronic imagestabilization (EIS), can be provided.

11th Embodiment

FIG. 24A is a schematic view showing a side of an electronic device 20according to the 11th embodiment of the present disclosure. FIG. 24B isa schematic view showing another side of the electronic device 20 inFIG. 24A. FIG. 24C is a block diagram of the electronic device 20 inFIG. 24A. In FIG. 24A, FIG. 24B and FIG. 24C, the electronic device 20of the 11th embodiment is a smartphone. The electronic device 20includes an imaging apparatus 10 a, an imaging apparatus 10 b, a flashmodule 21, a focusing assist module 22, an image signal processor 23, auser interface 24 and an image software processor 25. The imagingapparatus 10 a is a camera module. The imaging apparatus 10 a includesan imaging lens module 11 a, a driving apparatus 12 a, an image sensor13 a and an image stabilizing module 14 a. The imaging apparatus 10 aaccording to the 11th embodiment can be the same as the imagingapparatus 10 according to the 10th embodiment, and will not be repeatedherein. The imaging apparatus 10 b is a camera module. The imagingapparatus 10 b includes an imaging lens module 11 b, a driving apparatus12 b, an image sensor 13 b and an image stabilizing module 14 b. Theimaging lens module 11 b includes an imaging lens assembly and a barrel(its reference numeral is omitted) for carrying the imaging lensassembly. The imaging lens assembly can be identical to or differentfrom the photographing lens assembly according to the presentdisclosure. The driving apparatus 12 b, the image sensor 13 b and theimage stabilizing module 14 b can be identical to or different from thedriving apparatus 12, the image sensor 13 and the image stabilizingmodule 14 of the 10th embodiment, and will not be repeated herein. Whena user takes a photograph via the user interface 24, light rays of theimaged object 26 are focused by the electronic device 20 via the imagingapparatus 10 a and/or the imaging apparatus 10 b for generating animage. Meanwhile, light compensation is provided by the flash module 21,the object distance of the imaged objected 26 is obtained by thefocusing assist module 22 for quick focusing, and an optimized imageprocessing is provided by the image signal processor 23 and the imagesoftware processor 25, so that the image quality of the photographinglens assembly can be further enhanced. The focusing assist module 22 canadopt conventional infrared or laser for quick focusing. The userinterface 24 can adopt a touch screen or a physical button, and imageprocessing software can be utilized through the user interface 24 forproviding a variety of photographing modes and image editing functions.

12th Embodiment

FIG. 25 is a schematic view of an electronic device 30 according to the12th embodiment of the present disclosure. The electronic device 30 ofthe 12th embodiment is a tablet personal computer. The electronic device30 includes an imaging apparatus 31. The imaging apparatus 31 can be thesame as that of the 10th embodiment, and will not be repeated herein.

13th Embodiment

FIG. 26 is a schematic view of an electronic device 40 according to the13th embodiment of the present disclosure. The electronic device 40 ofthe 13th embodiment is a wearable device. The electronic device 40includes an imaging apparatus 41. The imaging apparatus 41 can be thesame as that of the 10th embodiment, and will not be repeated herein.

The foregoing description, for purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-18 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. A photographing lens assembly comprising sevenlens elements, the seven lens elements being, in order from an objectside to an image side: a first lens element, a second lens element, athird lens element, a fourth lens element, a fifth lens element, a sixthlens element and a seventh lens element; each of the seven lens elementshaving an object-side surface facing towards the object side and animage-side surface facing towards the image side; wherein the seventhlens element has the object-side surface being convex in a paraxialregion thereof; at least one surface of the seven lens elements isaspheric; wherein the photographing lens assembly further comprises anaperture stop, an axial distance between the aperture stop and theimage-side surface of the seventh lens element is SD, an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the seventh lens element is TD, a focal length ofthe photographing lens assembly is f, a focal length of the first lenselement is f1, a focal length of the second lens element is f2, amaximum of refractive indexes of all the lens elements of thephotographing lens assembly is Nmax, and the following conditions aresatisfied:|f/f1|+|f/f2|<0.50;0.65<SD/TD<0.85; and1.650<Nmax<1.750.
 2. The photographing lens assembly of claim 1, whereinthe third lens element has positive refractive power; the fourth lenselement has negative refractive power; the fifth lens element haspositive refractive power.
 3. The photographing lens assembly of claim1, wherein the seventh lens element with negative refractive power hasthe image-side surface being concave in a paraxial region thereof andcomprising at least one convex shape in an off-axis region thereof. 4.The photographing lens assembly of claim 1, wherein the second lenselement has the object-side surface being convex in a paraxial regionthereof and the image-side surface being concave in a paraxial regionthereof; each of the seven lens elements has at least one surface beingaspheric; there is an air gap between each of adjacent lens elements ofthe seven lens elements.
 5. The photographing lens assembly of claim 1,wherein the sixth lens element has the image-side surface being concavein a paraxial region thereof, and at least one of the object-sidesurface and the image-side surface of the sixth lens element comprisesat least one inflection point.
 6. The photographing lens assembly ofclaim 1, wherein the sixth lens element has the image-side surface beingconvex in a paraxial region thereof; at least five of the seven lenselements are made of plastic material.
 7. The photographing lensassembly of claim 1, wherein the first lens element has the object-sidesurface being concave in a paraxial region thereof, and at least one ofthe object-side surface and the image-side surface of the first lenselement comprises at least one inflection point.
 8. The photographinglens assembly of claim 1, wherein at least two lens elements of theseven lens elements of the photographing lens assembly have Abbe numbersless than 22.0.
 9. The photographing lens assembly of claim 1, whereinan axial distance between the object-side surface of the first lenselement and an image surface is TL, a maximum image height of thephotographing lens assembly is ImgH, and the following condition issatisfied:1.0<TL/ImgH<1.75.
 10. The photographing lens assembly of claim 1,wherein the focal length of the photographing lens assembly is f, anentrance pupil diameter of the photographing lens assembly is EPD, andthe following condition is satisfied:0.80<f/EPD≤2.30.
 11. The photographing lens assembly of claim 1, whereinthe focal length of the photographing lens assembly is f, a maximumimage height of the photographing lens assembly is ImgH, and thefollowing condition is satisfied:0.65<f/ImgH<1.0.
 12. The photographing lens assembly of claim 1, whereinthe focal length of the photographing lens assembly is f, the focallength of the first lens element is f1, the focal length of the secondlens element is f2, and the following condition is satisfied:|f/f1|+|f/f2|<0.30.
 13. The photographing lens assembly of claim 1,wherein each of the image-side surface of the sixth lens element and theimage-side surface of the seventh lens element comprises at least oneconvex shape in an off-axis region thereof; the focal length of thephotographing lens assembly is f, a composite focal length of the firstlens element and the second lens element is f12, and the followingcondition is satisfied:−0.10<f/f12<0.35.
 14. The photographing lens assembly of claim 1,wherein a maximum optical effective radius of the object-side surface ofthe first lens element is Y11, a maximum optical effective radius of anobject-side surface of the second lens element is Y21, a maximum opticaleffective radius of the object-side surface of the third lens element isY31, a maximum optical effective radius of an object-side surface of thefourth lens element is Y41, and the following conditions are satisfied:Y11>Y21;Y11>Y31; andY11>Y41.
 15. The photographing lens assembly of claim 1, wherein anaxial distance between the object-side surface of the first lens elementand an image surface is TL, a maximum image height of the photographinglens assembly is ImgH, half of a maximum field of view of thephotographing lens assembly is HFOV, and the following conditions aresatisfied:1.0<TL/ImgH<2.0; and40.0 degrees<HFOV<70.0 degrees.
 16. The photographing lens assembly ofclaim 1, wherein an axial distance between the aperture stop and anobject-side surface of the second lens element is Dsr3, an axialdistance between the aperture stop and an image-side surface of thesecond lens element is Dsr4, an axial distance between the aperture stopand the object-side surface of the third lens element is Dsr5, an axialdistance between the aperture stop and the image-side surface of thethird lens element is Dsr6, and the following conditions are satisfied:|Dsr4/Dsr3|<1.0; and|Dsr5/Dsr6|<1.0.
 17. An imaging apparatus, comprising: the photographinglens assembly of claim 1; and an image sensor disposed on an imagesurface of the photographing lens assembly.
 18. An electronic device,comprising: the imaging apparatus of claim
 17. 19. A photographing lensassembly comprising seven lens elements, the seven lens elements being,in order from an object side to an image side: a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element, a sixth lens element and a seventh lens element;each of the seven lens elements having an object-side surface facingtowards the object side and an image-side surface facing towards theimage side; wherein the sixth lens element has negative refractivepower; the seventh lens element has negative refractive power, and atleast one of the object-side surface and the image-side surface of theseventh lens element comprises at least one inflection point; at leastone surface of the seven lens elements is aspheric; wherein thephotographing lens assembly further comprises an aperture stop, an axialdistance between the aperture stop and the image-side surface of theseventh lens element is SD, an axial distance between the object-sidesurface of the first lens element and the image-side surface of theseventh lens element is TD, a focal length of the photographing lensassembly is f, a focal length of the first lens element is f1, a focallength of the second lens element is f2, and the following conditionsare satisfied:|f/f1|+|f/f2|<0.50; and0.65<SD/TD<0.85.
 20. The photographing lens assembly of claim 19,wherein the fourth lens element has the object-side surface beingconcave in a paraxial region thereof and the image-side surface beingconvex in a paraxial region thereof; a curvature radius of theobject-side surface of the third lens element is R5, a curvature radiusof the image-side surface of the third lens element is R6, and thefollowing condition is satisfied:0.10<(R5+R6)/(R5−R6)<8.0.
 21. The photographing lens assembly of claim19, wherein the focal length of the first lens element is f1, a focallength of the third lens element is f3, and the following condition issatisfied:|f3/f1|<0.90; the focal length of the photographing lens assembly is f,a curvature radius of an object-side surface of one of the lens elementsof the photographing lens assembly is Rf, a curvature radius of animage-side surface of the lens element of the photographing lensassembly is Rr, and at least one of the lens elements satisfies thefollowing condition:|f/Rf|+|f/Rr|<0.50.
 22. The photographing lens assembly of claim 19,wherein the focal length of the first lens element is f1, a focal lengthof the fifth lens element is f5, and the following condition issatisfied:|f5/f1|<0.70.
 23. The photographing lens assembly of claim 19, whereinthe focal length of the photographing lens assembly is f, the focallength of the first lens element is f1, a central thickness of thefourth lens element is CT4, a central thickness of the fifth lenselement is CT5, and the following conditions are satisfied:−0.30<f/f1<0.50; and0.10<CT4/CT5<0.85.
 24. The photographing lens assembly of claim 19,wherein the focal length of the photographing lens assembly is f, thefocal length of the first lens element is f1, the focal length of thesecond lens element is f2, a focal length of the third lens element isf3, a focal length of the fourth lens element is f4, a focal length ofthe fifth lens element is f5, a focal length of the sixth lens elementis f6, a focal length of the seventh lens element is f7, a focal lengthof i-th lens element is fi, a minimum of values of |f/fi| is |f/fi|min,and the following condition is satisfied:|f/fi|min<0.10, wherein i=1,2,3,4,5,6,7.
 25. The photographing lensassembly of claim 19, wherein a maximum optical effective radius of theobject-side surface of the first lens element is Y11, a maximum opticaleffective radius of the image-side surface of the seventh lens elementis Y72, and the following condition is satisfied:0.50<Y11/Y72<1.0.
 26. The photographing lens assembly of claim 19,wherein a vertical distance between a non-axial critical point on animage-side surface of the sixth lens element and an optical axis isYc62, a vertical distance between a non-axial critical point on theimage-side surface of the seventh lens element and the optical axis isYc72, and the following condition is satisfied:0.10<Yc621Yc72<1.50.